My current dilemma (instrument-wise that is..)
 

I don't know which to choose.

I need an amp that has a lot of gain, a lot of headroom, and a lot of balls. I'm stuck between these:

Peavey 5150
http://www.vhnd.com/images/5150I.jpg


Carvin V3
http://img.hi-fi.ru/news/2006-09/carvin_v3.jpg


Marshall JCM2000 DSL100
http://www.musikland-online.de/pix/o...e-JCM-2000.jpg


Marshall MF350
http://cachepe.samedaymusic.com/medi...257d02f9d6.jpg



If there's anyone here with an opinion, preferably someone who has some sort of experience with one or more of these amps, I would love your input. I don't know which I should go with. I can generally find them all used on craigslist for around 750-850 so price isn't really what I'm worried about. I just need something that'll last me a while and that I can get a good sound out of.