I finally got to gig with my new rig, and I have to say I certainly spent my money wisely. I used to play through a Tube Works 1x15 combo that put out about 200 watts without using an extension cab (which I didn't have). The Tube Works head had good tone, but the combo cab lacked bottom and, since it had no tweeter, articulation. 200 watts seemed like enough, because my band isn't all that loud. Not long ago I got GAS, sold a bunch of gear and used the proceeds to get an Avatar B212, an SWR Grand Prix preamp, a Stewart World 1.2* and a Presonus compressor. Total cost was just about $1000 (the Avatar is new, all the other stuff used). To quote Christopher Walken as The Continental; WOW! WOWee WOW WOW! What a difference!!! Terrific tone, plenty of rumblethump, mondo headroom. And this is with decidedly non-premium gear. I can only imagine what it'd sound like with an Aguilar pre.... First lesson learned: The bass may be important, but don't skimp on that rig!! Second lesson learned: It's not necessary to spend huge bucks on something that'll make your ears very happy, but you do have to spend a certain amount. Perhaps using more highly regarded (=much more costly) cabs and amps would result in a rig that sounds better, but THAT much better? I can't answer that because i don't really know, but I doubt it. *The Stewart didn't have any overheating problems at all. We were outdoors, but only in direct sun for a short time.