I'm having this same internal debate. Almost all of my regs are DR, and all BG and deco/stage/sm regs interchange. Most of those RG3000, a pair 3100s and one set 3500 Hurricanes. The 3000/3100 series breath well enough but have proven absolutely bullet proof and like a Timex. 3500s breathe great, but tend to creep with use.
That said I used my Zeagle flathead VI last week and I really appreciated it when doing deco in ripping river current.
I'm considering switching over everything to Atomic, Apex, or Zeagle (new job, brands we carry, gear @cost).

