I have a Source Audio Ventris reverb which I find very satisfying.
I've not tried the Source Audio Collider suggested above (which includes algorithms from both the Ventris reverb and Nemesis delay), but the format is very similar (although the Ventris has two reverb DSPs for dual reverb in parallel or series, whereas the Collider has one DSP for reverb and one for delay), and I only didn't go for the Collider because I already felt as though I had delays covered (since I have a Jomox T-Resonator II and DSI Evolver). The Source Audio algorithms are very flexible and high quality, but are probably less "glamorous" than the Strymon ones; I wanted the transparency because I feel like I want to keep the character of the synths in the fore, and I felt like videos where Strymon effects were used always had that sound.
I'd certainly recommend the Ventris, and the Collider is part Ventris and part Nemesis in one box, even if it has a reduced selection of the algorithms from the dedicated reverb/delay units. They work well without computer/phone, but the apps provide access to much deeper control of parameters and setup if you want it. The Rev2's integrated delays also make it seem as though some of the delay bases are already covered, even if I find its reverb a bit "meh" (useful but not v. inspiring).
Lots of other suggestions (Zoia, OTO), but I don't want to lead you astray (or up in price) when I think you've already narrowed it down to some fine options.