You could try a Yamaha YSP5100 or 4100 soundbar. Not really designed for the purpose you have in mind, but I think it might tick most of your boxes while having almost no depth. Height plus hard kitchen surfaces would probably favour it soundwise. Built-in FM, iPod Compatibility via Wireless Transmitter (YIT-W10 Charging cradle), a few digital inputs for your airport express/squeezebox which you could bury behind it, and a wireless sub (should you want it).
Bit left field, but I hought I'd throw it out there.

Last edited by dBrowne; 2012-06-14 14:00.
Main System: Trinnov Altitude 32-8-16, 271, 2 x 8KXE, 1 x 8KPP, 6 x M6 Surrounds, Rel No.25, Oppo 203, Zappiti Pro 4K HDR, Roon, WiiM Mini.