Any of the Sonos portable stuff, one of those and a Sonos Bridge will be pretty good.
Well that's not support. Anything with a 3.5mm jack or optical in has support in that case.
Zeppelins are out of budget
Well, I went to JL yesterday, and had a listen to every unit (Bose / B&W / Sonos / Philips)
The Sonos Play 5 (£350) was very good, the app was great, but it looked ugly and I needed extras for wifi (it's not technically AirPlay, and needed a £40 bridge, and £100 dock).
The Bose units while good, were blown away by the B&W two. The Mini was great, looked good and sounded brilliant, I was sold (£300).
Then I listened to the over-my-budget Zeppelin Air (£500); holy s**t it's clear, great bass, AirPlay enabled too.
I couldn't resist it after comparing.
I listened to a Zeppelin Air and really wasn't that impressed, but then again I listen to a full AV system every day so maybe my expectations were unrealistic as it's only relatively small, it's just that everyone absolutely raves about them.
I've had a couple of issues with AirPlay, but only from my 4S, not from the iPad.
I assumed it was due to my router being upstairs (my Xbox Live keeps disconnecting too).
Most of the time I just plug my iPhone in, it charges it anyway.
Don't get me wrong, it's not a patch on my Onkyo kit in the living room. But for the kitchen / garden it's perfect. I wouldn't want a 5.1/7.1 in the kitchen.