Bar none, the most amazing reverb unit I've ever heard. Not without it's drawbacks though, it's pretty difficult to navigate the menu, plus the PC app is a little buggy (deleting the entire preset at the point of saving it), and you can only see certain parameters (like reverb levels on a delay preset) in the PC app. But you cannot deny the reverbs on this thing, especially the Spatium, Shimmer, and Anti-Shimmer are all insane. The delays are 2290 quality as well. I wish it was programmable more like the rack effect way of doing things, scrolling through menus and changing parameters on a screen that makes sense, but this unit makes the G-System seem user-friendly. It has some odd features I'd never use too, like it's own effects loop using 1/8" plugs, and an Aux In and Aux Out jack, which I still haven't read enough about to know why they're there.
Positives: Some of the best reverbs you've ever heard, and the delays are high quality too. Super transparent, virtually no tone suck, amazing amazing amazing stereo sounds. It has a few extra effects in it too such as a basic chorus & vibrato, plus some pitch shifting capabilities on the delays.
Cons: Hard to program, buggy software, and the biggest drawback: Using the high end delays means you can only use a basic reverb, using the high-end reverbs means you can only use the basic delays. Not sure why they programmed it like this, but that's how it works. This is still worth the price, but they could charge double if they had programmed it to use full functionality of both reverbs and delays at the same time. What if I want a pitch-shifted delay feeding a lush reverb? The Boss MS3 can do this, not sure why the Tempus can't.
Not my video, but you get the point: