which loop pedal to buy?

["Bob Weottababyitssaboy" <mitzred15@hotmail.com>]

hi,

looking for a loop pedal that is midi compatible. Echoplex looked great, 
but 
very pricey. Any thoughts? Here's what i'm thinking so far

1. a "loop pedal/machine" controllable by a separate midi instruction 
pedal 
(the kind of pedal that just sends the instructions).

2. Also connected to the Midi instruction pedal, a sequencer that can 
trigger drum sounds from my keyboard (basically making my keyboard a drum 
machine). Or instead, simply buying a drum machine to be triggered by Midi.

Somehow, the loop pedal and the "drum machine" have to be in sync.


The basic idea is to have a drum machine that i can loop over. But since 
loops are in real time AND drum machines are separate pieces of machinery 
any way, i'm not sure how to do this. HELP!!!

thanks,

tim