By default, the PlayStation Mobile release running on a PlayStation Vita is the best version, simply because it meets those conditions. The game feels just like it always did on PC, with excellent use of the Vita's d-pad or analog stick to move your little guy, but is portable.
I considered writing a longer preview, but there's not much you need to know. It's Super Crate Box, but portable, with buttons. Provided you're playing on a Vita or another PlayStation Certified device with controls – like a Wikipad or an Xperia Play, that is. It'll work on all the other PlayStation Certified devices, but with touch controls.