This is my fist cab and attempt at getting a head. I'm not sure what to go for new? used? it's 400w at 8ohms which I feel like I should try to get the most out of it for volume. I feel like 250w at 8ohms might be too quiet I'm afraid of turning it up too loud because I play punk. I was thinking either 350w or 500w since its hard to find a good head at 400w. I've got about 300$ to work with. some of the amps Ive looked at are Peavey Mark VIII bass head 350 @ 8 ($100), Ampeg SVT 350T Bass Head 250 @ 8 ($250). What do you guys think?