hey so i'm lookin to upgrade and i have so far two heads in my mind. one would be the MO' bass or the mini MO' bass head. i really like the looks and sounds of them. i have a couple of friends who use them and love them and i love the sound they produce from them. next is the mesa boogie m-pulse 600. i have not heard one nor have i played through one but have read reviews and i think i would like one. of course i will try it out first but i thought if someone knew about the two maybe you could give me a quick comparison of the two and maybe tell me what one i should get. the mo bass will of course be a ton harder to get cause they have not been made for about six years so i just have to wait for someone to go into debt and need some extra cash i guess but i think it will be worth the wait. unless someone thinks other wise then i will just have to go pick me up a m-pulse. thanks for anyone and everyones help!!