johnc, if you like soloing above all, then going to SBS (or the MajorMinor Course) is a good next step (plus there's an 'aha' moment in the course (won't spoil it for you). I went for the BGIAB2, did the first song, but realized my heart was more in learning these types of solos (slow blues). I will be back at BGIAB2 soon, it's a good course, but different. And there are some tough solos in there, but you are learning a 100+ bar song. That'd take me forever to memorize, so I didn't see it as effective for the learning curve at this point. But it's good if you want to play entire songs and feel like part of a band including vocals.