I'm looking at these two heads. They seem pretty good value at the moment and I remember liking what I heard from the Shuttle 9.2 a while ago. I'm trying to figure out what are the main differences between these two amps, in practical terms. The Streamliner seems a bit "warmer" but with lots of top end still, from watching videos on Youtube, but that's hardly a good way to judge. Has anybody here compared both? I've decided the TC RH450 doesn't really do it for me anymore, and I'd like something a bit more "open" and with a bottom end that does not sound so "compressed".