I'm new here so I hope this isn't a redundent question (though I checked the first several pages and saw nothing similar). Here is the deal: I currently use a Carvin 1000 Redline amp, with a blown 15 and working 4-10. I tested the Ampeg SVT 18 in a store and was impressed. It shook the walls, and seemed to have the kind of deep, powerful, low-end that I seek. Not muddy, fairly well defined for an 18 inch speaker. Then I started to read rave reviews about the deep bass capabilities of the SVT 4-10 HLF. My questions are these: Would I be better to go with the 4-10 HLF over the SVT18? I am looking at playing in some smaller clubs, where a good 4-10 would be sufficient. And thinking ahead, I kind of like the idea of possibly using the SVT 18 with the 4-10 HLF. I am looking for powerful, low, deep bass, as well as a strong midrange to cut through the guitars. I have not been happy with the sound of the Carvin cabinets, and I am sure the 15 is blown. I wonder why I don't hear (on the Ampeg site also) more talk about the SVT 18---it sounded really good to me...? Anyway: Should I go with the 18 and possibly add the 4-10 HLF later---or would the 4-10HLF be sufficient in the low-end department, and possibly better and more versatile in the mids and highs? Also---how do these cabinets match up with the Carvin amp? I believe the Ampegs are 4-Ohm speakers...would they work with the amp? What I am thinking is---if the amp is OK and the 4-10s decent, I could go with the SVT 18 to pull in an overall deep, warm sound that the Carvin 15 and 4-10s lacked... HELP! Seriously, any helpful comments would be greatly appreciated. Also: I play a Carvin LB-70 and a Peavey Millenium (American). What I want, however, is the Lakland 44-02---fits like a glove and sounded great at Rudy's in New York! Any thoughts on the basses with this proposed rig?