I liked the Timefactor when it came out. Quite noisy compared to some more modern stuff though. I think those old factor pedals and the SPACE are infinity more usable than the H9 and H90. I didn't last long with my H90. Just didn't like how it worked, and it was insanely noisy in front of a high-gain amp. Like, wayyyyy noisier than the "cheap Behringer" stuff from TC (Flashback 2, Hall of Fame 2, etc)
Eventide are a solid company. I and two other blokes got done over by a scammer on Gumtree when I sold my old H9, and Eventide sent me a replacement pedal. We got the money back eventually too. But Eventide really didn't need to do that. So as a company, they're one of the best in my view. But alas, I'm just not into their products.
The RV500 was lovely, but I struggled to get anything approaching the Bloom or Cloud stuff from the BigSky. I think the Source Audio Ventris has much better algorithms, but the RV500 has better overall engineering. Boss seem to be the only company who manage to get spillover and midi support almost 100% correct. Source Audio haven't really ever managed to nail that.
DD500... pondering buying one to not only use as a delay, but also as a master clock for my board. But it sorta depends what I end up with.