I had an interesting experience last night... I helped my guitarist buddy find a cheap bass to keep around for recording. We found a used Epi Powerbass (we think) - an 80's era P/J on a P style body, with J style controls and nut. What made this one special was that the prior owner had installed an EMG P/J set. After Tommy cleaned it up and did a setup, the thing sounds and plays great. Not bad for $130. So, last night at the end of our jam I grabbed this thing to give it a try. It has a thumbrest, which may have been added (it's brown, while the rest of the hardware and pickguard is black). I'd forgotten how much more pleasant it is (IMO) to play with a thumbrest! It makes my hand position more consistent, and I find it easier to play more smoothly. I'm thinking about picking up a few cheap thumbrests and attaching them to my Jazz and Sterling pickguards with double-sided tape to see how it works out. I know that the "modern technique" eschews thumbrests, but hell - I ain't modern either!