Can't comment on the Rig Pro, but a few years ago I picked up a Rig 2 from an instructor I know from our LDS (who was moving to Papua New Guinea, and couldn't bring it along). It's been very reliable, and the weight system is easy to use, secure, etc. Yes, there are an over-abundance of D-rings, but I remedied this by ID'ing those that would never be useful, and applying a high-tech removal device -- X-acto blade...
It's been a solid performer. Then again, everyone has their opinions regarding these things, and if you search this board using "Dacor Rig" you'll no doubt find more people calling it a POS and a "poseur" BC. Again, I can't speak about newer models, only my second-hand Rig 2, which was a damn good deal, and has served me well.