You cant beat tube sound, requires maintenance but its well worth it. Ive had an ampeg svt-classic and classic 810 rig now for about 6 months and its all i need.
I personally have SWR, GK and EDEN amps through SWR Goliath Jr cabs. I love all three of my amps but I do like the sound of the GK alot with the Music Man Basses. But that is the sound I grew up with. THe SWR and EDEN are fantastic as well. My friend in the shop runs the big AMpeg Classic SVT and the Ampeg Pro 4 and they both sound great through his Ampeg 410 cabs. He plays heavier stuff than me but he uses Stingrays and it all sounds great.