The Randall MTS line is great! I went MTS awhile ago and don't regret it one bit. The modules sound good, some of them very good stock, but even better after getting modded. Dave Friedman mods the modules as well as Pete - stratotone. Both do very good work, Pete has some mods and extra additions that go above and beyond such as adding switches and kewl stuff, and people really seem to love his work.
I have a modded SL+ by dave and it is great as well. The SL+ is supposed to be that, modded marshall, though stock its a little bit fizzy, I think the Mr Scary Module does this very well, possibly the KH2 also gets into this teritory.