I have a P4 FL and its good but the MSR has more tools in the reticle. Doing it over between the two I would choose the MSR. But doing it over for real I would get the H59 or Tremor 3. I really like the floating dot in a lot of the new reticles.
Yes, when I had a premier 5-25 it had the gen 2 xr which was very good. It's a contender but was mostly looking at the resolve value of SnB optics carrying either the P4 or MSR.
Personally have the Gen II XR and the H2CMR. Love both, but gotta give the edge to the H2CMR. Guess that’s not your question, but I think it’s just going to depend on who’s looking to buy when you’re looking to sell.
I have older eyes......and for me the MSR works best......I pick up the reticule quick (even on lower power) and does not bother me at longer ranges. I always wanted a SB or Premier, and the SB does not disappoint.....really like this optic. My shooting partner has a Premier with the XR2 reticule.......and it is too fine for me.