I have Steve's blues course and have finished through session 3 - half way. I have put it down for now as want more help with soloing than Steve provides.
I also have a number of Griff Hamlin's courses, including BGU, 52 Rhythms and Fills, Blues Gig in a Box, 5 Easy Blues Solos, etc. I enjoy Griff's teaching style and approach to soloing. I also attended one of his BGU Live events where you get to jam with others on stage with his back line. Griff has a 365 day return policy on all of his courses, so no risk in any purchase.