I'm in the market for a bass head, Here's the thing. I'm REALLY into the 2x15 Bass cab. I LOVE the Deep, warm, punchy sound they have when paired with the right head. I prefer them over the 4/8x10 set up. I know they're not very popular amongst today's players, but they Do It for me. I'll probably top it off w/ a 2x10 atop of it for the highs. I used to have a GK 400RB back in the early 90's with a Trace Elliot 4x10 cab. Looking back now, they probably weren't matched well, but I didn't know about matching ohms and all that stuff and I'm STILL not clear on it, Ha Haaaaaaa!!! ANYWAYS, I need help from the professionals, experts/experienced and knowledgeable Bassist here on TB to help/guide me in making a decision on a Bass head. I've been reading a lot of the older threads, and I seem to have narrowed it down to 2 or 3 choices. The Ampeg SVT4 Pro, Mesa Boogie big block 750 or Ampeg SVT 7 Pro(?). Sorry in advance for being long winded and ...well, a little ignorant about a few things, Ha Ha! Thanks for any advice, tips, suggestions etc. B.T.Jazzplyr.