I have a TH500 and love the full, warm, clear and punchy tone through my Bergantino cabs. I hardly have to EQ the amp to get a great sound out of it. I'm looking to buy another as a backup.
I knoiw there's a lot of love for the Streamliner amps but even though I haven't heard one I know, from the reviews, that I wouldn't like the big, pillowy low end.