I am absoloutely 110% sure that I want to go for Marshall. I have used marshall's for the last 6 years, and haven't been let down by them yet. I am not really a pedal distortion player, and I love the Marshall overdrive, particularly on these heads. I have played the DSl in practice and I loved the tone, but I really do not like the idea of having four channels, that I can only really use two of on stage. I mean, I hate moving back and forward during songs/in between songs, fiddling with settings. But on the other hand, I can see that there is a lot of good things said about the DSL, which the TSL cannot match. The place where I intend on purchasing the products, have quoted me exactly the same price on both of them. Im not treating money as the main issue, as they are both within my budget. Just looking for general/detailed feedback on which would be a better amp to go for, and for a heads up on any problems people have found with them.