I own a Jub and I have a friend that owns both a DSL and a TSL.
The Jub has a very Fat Beefy tone that is hard to find in other amps, Its like a Mack Truck plowing through a brick wall and when you play other amps your really miss what it can do. But its not the end all be all amp forsure, the DSL is much more versital. The Clean on the Jub gets dirty when driven hard, sounds great with a Strat. THe DSL seems to stay clean has a more modern sound and more Crunch and gain on tap. I would say the DSL is more versital and if I was in say a cover band or top 40 band that is the amp I would have, the DSL can also do metal and everything in between and I think the Jub excels at Blues to Hard Rock.
The down fall to both amps is the Shared EQ, though the volume controls on the DSL let you dial in your clean much better than on the Jub and make it more of a true two channel amp. THe Jub is more like a one channel amp and it can be a real pain trying to adjust the volumes on both.
I have come close to selling my Jub for a DSL or TSL but like I said there is just something there that you miss when you play another amp.
Now the TSL is another story, I have heard some sound great and some like total **** aka my friends sounds like a bag of bees but his setting are riduclous. I actually call it "The Angry Beaver Tone" HA