I'm going to echo some of the above sentiments here. I have a number of scubapro regs--Mk 2's, Mk 3's, Mk 5's, Mk 7's, Mk 10's and a lone Mk-10+. All are excellent regs and easy to work on. Like others on this site, I do most of my own reg maintenance. I had a couple of Mk-25's until recently, electing to swap them out for a pair of Apeks regs. I did this because the Mk-25 is more difficult to service (many fiddly small parts), and more difficult to find kits for here in the US. Parts for the older regs are readily available and inexpensive (check out
Store | Vintage Double Hose). The Mk-25 is a very nice breather, but really no better in a practical sense than my Mk-5's or Mk-10's. I can easily get kits from NESS for the Apeks.
I also have numerous regs from Dive Rite, USD, Aqua Lung, etc, all of which are excellent breathers and easy to service.
Scubapro makes some great regs, and many of the old ones are still my favorites, but I'm like many others who won't be buying any more new ones in the future. With the new crop of high quality, less expensive regs from other manufacturers and the old crop of still-serviceable older Scubapro models, I see it not so much as anti-Scubapro bias. I see it more as moving on.