I've heard the Senn IE80s and they didnt really impress me too much, i have to say - and everything i've read about the IE800s leads me to assume i wont like their sound.
JVCs - i'll have to get over my irrational bias against their brand name (I find it hard to take seriously the products from the large electronics companies, even when I know i am being irrational and they make some very good products). Although the "recessed mid" is the opposite of what I want.
The Grados - is their house sound similar to that of Grado cans? If so, they may not be for me.. bright highs and I do not get along.
I am looking for something that is midrange focused (i am ok if it has deep bass, but definitely not ok if it has bright highs). Would the Grados fit this bill? I had heard the Piano Fortes at Jaben and there was something very weird going on with their sound. There are some good dynamic driver IEMs in the $100-200 range (eg, Hifiman) but shirley there are better ones at a higher price?