i used a korg1500 before.. it has lotsa fun tones, lotsa drives..
allows 16sec recording/looping,
expression pedal with volume control all the way to wahs and weird effects.
might want to note that its pretty small as compared to most multi efx like tonelab se, etc...
good for fun now, and now as in (not more then 6 months if u really love playing your guitar a lot)
after which u'll grow sick of it...