What would be the most compact bounce flash available?

Hi, I am looking for a new flash to use with my OM1 and Zuiko 50mm f1.4.

Portability is important, should be able to carry it in my pocket comfortably. but I also would like it to be bounce capable.

I was considering a Sunpack 383 (it seems smaller than the Vivitars 283 and 285). I've seen some at resonable prices on e-Bay and Craig's list.

Can anyone recommend another option? If not necessarily with as much power, but even smaller, bounce capable (at least verical) and a fast recharge cycle.

Thank you,

Mik S.