If the Reverb wasn't a thing I would be snapping up the Rift S for sure right now. But yeah, Reverb really looks like the way forwards. Also, I checked my task monitoring during a mission on the Persian Gulf with the Rift (textures on high), and was pleased to see none of my CPU cores maxed out at any point, so with the upcoming performance improvement to DCS (2 weeks), I'm confident it will remain playable with the Reverb without needing a big hardware upgrade.
I'm probably still going to have a massive upgrade anyway though, tbh ¬_¬