Don't count out the PR just yet. The PR will be MSR's "basic" stove: a cheaper but still effective stove. The MR will be MSR's "advanced" stove. Clearly nicer, lighter, more compact, more stable, better flame control, more convenient etc.

There will always be those people who want the nice features of the better stove. There will always be people willing to put up with the PR's "warts" to save a few bucks.

I have to say, I really like how I can fit both a gas canister and a MR into some fairly small pots. Can't do that with a PR.

HJ