i got a sony cdx-gt420u for about £100
Snap (well, not the price - I hope you didn't pay that much).
I love listening to music from the USB stick, but there are a couple of niggles:
1) track volume seems to vary dramatically
2) every track has some kind of extra marker with it, so the first five tracks of an album will be 1, 3, 5, 7, 9
Was wondering if you were experiencing the same, or whether it's just a function of using iTunes/Mac.
Would imagine it's a pain to to use without the stalk controls, although I'm gradually learning how to find the source and EQ3 buttons without looking.
The one real disappointment, though, is radio performance. It's okay in London but seems to drop off very quickly once I'm out of town. I suspect the old stock Phillips was just very good.