I've been using Shure PSM400's w/E2 earbuds for about 5 years now. I've been talking with a local audiologist about upgrading the earpieces to dual-driver Westone ES2 with custom molds, reason being the E2s (and E3's I used to use) are ridiculously unfcomfortable and often fall out. The Westones have been getting rave reviews and they're actually cheaper than Shure.

Just sold my Shure E4's and picked these Etymotic ER-4P's.

http://www.discountheadphones.com/er4.html

They say the detail and clarity of the Etymotics is the best in class. I'm hearing things on recording I never heard before. Some people think they are bass shy but they are enough for me. I've kind of weaned myself off the big and boomy bass. It has a tendency to cloud out and veil the highs.

I dig low end, but not too much. Enough to round everything off and make it full.

well, thought I'd toss out some opinions on these guys now that I've had the chance to use them in performance.
Mostly impressed with the Aviom system, but the in-ears are great.
Quick setup background, we have mikes on all the drums, drum shields, two guitarists with tube amps with mikes on them and isolation boxes over the amps to prevent stage wash, two vocalists, a keyboard guy (Yamaha Motif), and me. No other amps or monitor speakers.
Wow. I am a control freak anyway but there's nothing quite like being able to turn down one vocalist, turn up the snare, turn up the hi-hat, turn down the toms, turn up the kick, turn down the second lead player, adjust for the keys patch volume differences on the fly, turn up the bass, etc....just press a button and turn the knob. Save all that for next time, easy. Total control of what I want to hear. It was like playing along to a CD with headphones on.

OK, so it's my first time using a system like this. I can now understand why so many professionals do it this way.
Obviously the Aviom is the biggest part of it, and having a board that'll let you use it.
Here's what I had on stage; my Bass Pod with foot switch, two regular guitar cords, and a direct box. That's it. No amp, no monitor speakers, nothing else other than the ear buds and the Avion system.
The only drawback is, I'm tethered to that Aviom with a fifteen foot cord and the cord to my Pod, so it's hard to take one in-ear out and walk around to the Mackie sub and tower, and see how I sound in the house.
I plan to get an extension for the next time, so I can do that more easily.

Don't really know how well it worked in the house, (from most comments it sounded great) but on the stage, it was like a dream.

I will be playing at the main church this Sunday, and I almost dread going back to the electronic drums and all the monitor issues I've lived with for a long time....it's like after you've tasted real handcranked and churned homemade ice cream, (peach, preferably) the store brand tastes plain.

One thing about these SuperFi in-ears, tho...they are extremely efficent, so when you go from headphones to these, the volume needs to be cut WAY down or you'll blow out your grey matter....huge difference.

Gotta go...
TonyY

The in-ears have been a blessing. What's been nice is that I can take the plugs with a cable adapter and have monitors in my ears striaght in the board, or from another monitor! But yes, it is really nice when you can have your own mix of what you need in your ears, and it's soundin' off really good out front. The in-ear monitor system is "all that and a bag of chips"!

i use a UE super fi pro for my iPod, its great well balanced sound.

their new triple driver model looks tempting but its
a bit much for my wallet at this time.

You got that right; they do look interesting, but the ones I have now were nearly 250 bucks, that's more than enough for me.
Glad to hear you're using the UE's for the iPod, I love using mine with my mp3 player and computer stereo also....they sound fantastic. One thing to note, tho, you have to experiment with the diiferent ear plug configurations. With one form, if I smiled, it came loose from my ear. With another shape, it remained intact but moved just enough to break the seal and lose the bass. I really like the foams, but they need to be replaced far more often.

I was at a rehearsal at church last night, and, and realized how much the v-drum set sounded coming through the in-ears. Man, sounds like a live drum rig! It's nice when you can take a 'tronic rig and play dynamics when the in-ears sound sweet and clear!

Hey Tony, have gotten a case of upgrade-itis yet on those Super-Fi Pro's? heh..heh..heh....

http://www.earphonesolutions.com/uleanewtrxtr.html?gclid=COus5cy-uIgCFQJPQgodeWS1hg

These would make a nice Christmas present to yourself.

holy cow- those look great.
Amazing that it's a triple driver...

No, since I'm not the one paying for these unless I lose them, no desire to get new ones. Yet

Noticed this, in the specs on that website, and it explains why I thought these in-ears were EXTREMELY efficient...they about blew my ears out at first, I highly recommend turning the volume DOWN on the mp3 player before plugging these guys in. Anyway;

Shure E2 105dB/mW
UE SuperFi 5 Pro 119dB/mW

That's over 10% more efficient, which is definitely noticable!

Later- Thanks Steve, for the link, very cool.
But not yet....

TY