(Original post in Technique forum, thought it would do better here).

I am thinking of taking one of the courses offered by these two online schools. (Backgound). I have been playing bass for over 20 years, all self taught with the typical bad habits. Have played in cover bands of rock, blues pop at the local pubs and had all that fun. I now want to take it to the next level with a desire to enter more jazz territory and solo improv etc (getting a little more out of the pocket as it were). Have already started re-learning to read, used to way back in high school, and being more deligent in practice time with modes, arpeggios etc. I know the fingerboard very well already. With that said, would one of these courses be what I am looking for, or maybe another?
Thanks for the info,

Cliff Engel has a heavy slant toward Jazz/jazz improv/solo bass. Very reasonable with regards to price, and you get a ton of info and exercise material plus a lot of personal attention in the form of questions answered by email or even over the phone. You may want to send him an email telling him everything you want to accomplish, might be what your looking for.