The only trade off solo section I didn't like was in ANTR. JPs solo did nothing for me and JRs moreso because most of it was random noise rather than good shred melody. I wouldn't consider AROP to really be a trade off since they both just have 1 long solo spot. A trade off to me is JP, JR, JP, JR, and while in both Symphony X and DT it was getting old, at least the solos were still enjoyable. It wasn't until ANTR that I thought it was time to stop the trade offs. The Glass Prison has my favorite trade offs. The was before the crazy wackido JR stuff though.