Hi, I'm new to this site. I own a 2002 Peavey Firebass 700 blackface head and matching Peavey 4x10 cab. I'm looking at possibly selling my amp and getting a pre-fender SWR SM-400 with the SWR Goliath 4x10 Cab I've found online. Can anyone give me a basic run-down between the two? I've read some reviews on SM400s and folks complain of the unheard sub frequencies and lack of punch. I'm not looking to step down in power and was wondering if switching to the SM400 would be an upgrade? I like the punch and power of my 700 which actually puts out 450watts with the 4x10 I believe, but this SWR is the right price and if it's a super amp then I'll probably go for it. Thanks.