Of the rings I've used: the Warne vertically split ones were also my least favourite, mainly because it wasn't possible to undo and remount them (I know they do a QD version), also it didn't seem to do a good job of holding the scope without it slipping forwards.
The Leupold PRW are what I'd consider to be the cheapest decently made ones, my only dislike is that it's quite disconcerting clipping the top part on (that said, I'm sure the geometry means the tube is very firmly held). Ditto with the QRW, also with the QRW I'm not entirely convinced by the little levers in that you can't really tighten them much (maybe that's a good thing!), but they are convenient to remove and remount and I never had a problem with them.
Of the 'high-end' ones I've owned/seen: Nightforce/Leupold Mk4 (Tactical) but there's not a lot between them, the Nightforce is sleeker, they also do the super-light which has titanium parts...
Then there's the TPS: IMHO as good as any I've seen: machining and finish are flawless, and also cheaper than Leupold/Badger/NIghtforce etc. The only reason I sold a set to Jay22 was that I sold the 1" scope that they were holding.
Anyway, I've sorted pilgrimmick out with my Leupold Tacticals (just a tad heavy and I fancy some TPS aluminium ones)...