Ok so at about this time next month I'll be in the market for a new head. My Peavey nitro bass has done its duty and it's time for something better. I've used search for a good 3 hours and looked through threads to gather some information but I'm still kinda up in the air. I'm about 99.99% sure I want a tube head. And the budget will be aproximately $1000 and I'm probably going to go used anyway so I know I'm going to have some good options available. Right now I think my number one contender for my money is a mesa 400+. I haven't had a chance to play one yet which is a drawback. I know I need to get out there and get my fingers under some stuff before I make my final decision. And I'll make the time to do that before I plop down the cash. I have tried some SVT's at GC and Ampeg is just not my cup of tea. My main concern is if I have enough cab for one of those big heads. My cab is an Eden D410-T(the older rear ported) 540W max @ 4ohm. I really like this cab so would like to keep that but I'm not adverse to adding another cab to it later down the road if I find it's necessary. I play alt-rock/metal in medium sized venues. The tone I want is a warm with a bit of grit in it as my base tone. Am I ever going to be in a situation where I can open one of these heads up enough to get some of the natural tube overdrive? or will my head explode from volume first? Any input you guys/gals may have I'd greatly appreciate.