Yeah, if you hold the two stoves (PocketRocket, MicroRocket) in your hand, the build quailty and the "beefiness factor" is like night and day. The MicroRocket is a really nice stove. I know a lot of people really like the PocketRocket, but the PR was never one of my go to gas stoves.
For a while I really liked my Crux, and it's still a good stove, but when I got my Snow Peak Giga Power which has excellent pot stability, I found myself using my Crux a lot less.
Now, will my MicroRocket replace my GigaPower as my "go to" gassie? Hard to say, but those two are my top choices for stoves in this class. The MR is a little lighter and a little more compact. The GigaPower has better pot stability, and the flame is a little more dispersed so you don't get quite the hot spot. I guess I'd take either one depending on the type of trip. My PocketRocket probably won't see much use now that I've got a MicroRocket, and probably neither will my Crux.
HJ
Let me say just a bit more on this subject:
I have quite a number of small upright canister stoves. Here's a few (and yes I have more*):
a) Snow Peak GS-100 GigaPower
b) Vargo Jet Ti
c) Markill Hot Rod
d) Optimus Crux
d) MSR SuperFly
e) Monatauk Gnat
f) Soto MicroRegulator
g) MSR PocketRocket
h) MSR MicroRocket
The two I rate as top stoves? The MicroRocket and the GigaPower. Which is the better? Well, it depends. I rate the GigaPower as superior on pot stability, and the GP has a more dispersed flame (although not as nice as say a SuperFly). On the other hand, the MicroRocket is lighter and definitely more compact.
I think it's going to come down to what matters to you as to which is the better stove.
Is the MicroRocket a better stove than the PocketRocket? That's a complete no-brainer: Yes, the MicroRocket is clearly the better stove. The only negative in that comparison against the MicroRocket is that it takes a couple of seconds to rotate the pot supports into place, but in return for those extra seconds, you get a lighter, more durable, more compact stove. A more than fair trade in my opinion.
HJ
*Aren't you glad to know that a deranged gear fanatic is a forum moderator?