Hey Growler...
I tend to look at certain things - obviously, i don't want it to degrade my signal, so i try to find a processor that I can switch to 'neutral' if I need to.
i then look at how far I can edit the parameters, and how easily I can control things in real time. The absolute beauty of the G2 is the degree to which I can configure it to do exactly what I want, from MIDI control, to putting effects in side chains, reordering effects, having the output from one effect route back into the input of another etc... It's pretty amazing.
I tend to ignore presets as an indicator of what the thing will do, because what I want it to do is very rarely anything they bother to programme into it....
Experimentation is the key!
cheers
Steve
www.stevelawson.net