So, if you were to buy a reverb pedal to stick in a Helix FX loop as an upgrade, what would you get if you mainly wanted good room and plate reverb (hall would be a bonus), and wanted true stereo (input, output, and reverb itself), the ability to go 100% wet, and MIDI control.... and for around or less than 450USD / 400EUR / 350GBP?
Source Audio Ventris & Collider seem like the top choices in this price range, right? I was pretty impressed with their True Spring pedal, and the Ventris sounded better to me in some comparisons against the Big Sky (original model) that I watched.
I know the Golden is very popular and sounds amazing, but I'd want MIDI control. Neunaber ILLUMINE sounded great in the Leon Todd video too, though it's a little more, and breaking that 450USD mark I start to think about more versatile multifx options*. Mercury7 sounds very cool and the price is right, but the lack of a room reverb makes it iffy for me, and (if I understand correctly) it only has MIDI with their 90USD MIDI I/O box, so it's not actually much cheaper.
*I was looking at the VP4 before, justifying the price by it being able to replace a few of my pre FX, but losing stereo to be able to use it pre and post made me a little reluctant, especially considering the size.