My Rift came today and I have played a few hours with the touch. Overall impressions are positive, but not without some big issues.
I like the headset, it's lighter and comfier than the Vive. The visual differences are small imo, more god rays and bigger sweet spot are the standouts. The head strap is so much better than the Vive's though and the built in headphones are better than I expected.
The Touch controllers are good, but I don't think they are hugely better than the Vive's, only slightly. I could happily live with either but I do like having analogue sticks over the track pad.
Now the biggest difference... Tracking. Coming from the Vive, the Rift's Touch tracking is serviceable at best. It really lets the whole experience down. I think I have had more tracking issues in those few hours than my entire time with the Vive, a third sensor is essential imo which makes it more expensive than the Vive, and that's my problem. If I were to recommend either to someone I would still recommend the Vive unless they were strictly playing seated sim games.
My ideal set up would be Rift headset with Vive tracking and either of the controllers.