The wife wants one (this may mean I have a spare Karma), on the plus side it's got more capacity, is slimmer, and will be headunit controlled by the ICE in whatever her next car is (probably a VW).

What are the downsides?

I guess I'll have to start using iTunes (which I really didn't like the couple of times that I've played with it).

I'll lose gapless playback (appreciate this can be done by setting crossfade in a playlist but what if you just navigate to an artist/album on the fly and play without a playlist?)

And (I guess the biggest pain for me) I'll lose the bookmarks feature, something I use quite a lot.

Anything I haven't considered?

Oh yeah, she'll be using this in her tractor too, this is a noisy beast, should I get her noise cancelling headphones?