I own both 5-string and 6-string Wenge/Bubinga neck-through thumb basses. I like the 5, with its J-bass style MECS better, because it's more nasty. The 6, with its MEC sopabars, is more piano-like, with a bit more highs, and maybe a tad less growl. I also own a Pedulla Buzz 5 (PentaBuzz). It has a very sweet tone. I've recently decided that I also need an evil sounding 5-string fretless bass too. I know that a Thumb 5 fretless would nail it, but I was wondering how close in sound other Warwicks are. Would a Corvette, or a Fortress, Dolphin or even a Rockbass give me that dark evil fretless sound I'm after? ...or is that strictly the domain of the older neck-through Thumb, with it's peculiar angled pickups and Wenge/Bubinga woods? The Wenge/Bubinga neck-trough Thumbs are getting harder to find, and command a bit of a premium price. If I could get a Rockbass for under 7 bills, and record my nasty fretless tones on the cheap, I think I'd live happily ever after, and with more lunch money to spare. If those other models are just too far from the Wenge/Bubinga neck-through Thumb's tone, would a bolt-on Thumb in Ovangkol work? How close is their tone? What the consensus, men of Warwick?