I own the Jamarama program as well. I thought it was a well put together lesson plan. The videos and instruction were easy to understand and follow. Its still no guitartricks - Jamorama doesn't have the support system that GT does, or at least it didn't back when i purchased it. But I thought it was a solid program, I definately benefited from it.

The only thing i didn't like about jamorama was as soon as I got part way through doing the lessons, they kept coming out with "add-ons" that you had to pay extra for, which were only about 25% new lessons and the remaining lessons I already had.

I don't regret purchasing it though.