the hard part about testing modelers is finding something to reference the tone to. you can dial up just about anything you want on any device if you have the know how and time, but you have to have a tone in mind that you are trying to get.

i normally start by trying to get the same tone as my amp in the room. it's much easier to get there with the gsp1101 (from a basic warm eq stand point).

when i'm trying to get an artist's tone the all bets are off. i normally start with a preset that i already have that's close, then tweak from there. it took me a long time to get used to the sheer amount of highs the eleven rack has by default.