sell my thumb 6 and get this? i feel much more comfortable on a 5 string, but i do have fun on a 6. as for the thumb, its between selling it and putting ultralights on it, and even then it won't be perfect. ideally i think a 6 string fretless LX would be the best but...this would rock hard as well. anyone played a fretless proM/masterman/one before? i actually think christian mcbride has one... plus that single pickup in the back should leave plenty of room for a speed ramp. talk me out of it?