I would really like to know how a Thumb BO 4 compares to a Corvette STD 4 (bubinga). I spent all day playing basses, and came to the decision that I like the STD 4 better than anything that I've played. My only real problem is I was unable to find a Thumb BO to play. I've found a new Thumb BO 4 for just a bit more than the new STD 4 that I'm looking at buying. I really like the STD; I just don't want to buy the STD and keep having that nagging feeling that I should have gone ahead and taken the leap of faith and gotten the Thumb. It would be so much easier if I could have found a Thumb to play. So, buy the Corvette STD 4 active (bubinga) I know I love; or buy the Thumb BO 4 I long for but have never tried, but think I will love (every recording of a Thumb I have heard-pro to novice- I have loved the sound of the Thumb more than any other bass that I have heard).