Join Date: Dec 2000
Location: Chicagoland, IL.
If I were you, and I'm not, but if I were, I would bring whatever you are going to use with your amp to test it. You have a strat or whatever, bring it to demo it. You're going to be the best judge of what sounds good to you. Both amps are great, but like was stated, the IV has more options and gives you more control over your sound.
If it is an option, bring in your cab or see if you can leave a deposit to test the amp out from either place at your house/ studio whatever. Someplaces will allow it if you leave a check or credit slip for the amount of the amp.