This summer there's a big chance I might be touring the US. I will definitely be needing a bigger amp if this goes through, I was wondering if one of the Workingman's Stacks at musiciansfriend.com would work out for me. Probably the 4004, I do like the tone of the 4004 head alot. We will be playing shows with around 50 people to shows with about 1,000 people I think... I believe a few are outdoor. There will be PA support as well. Thanks for any suggestions ahead of time.