I would honestly cast a vote for the Nikon because I have the buckmaster 800 (ten years old now) and it has served me well. I had to replace it this year because of a damaged reticle, but it has always worked very well. it got abused. I have ranged deer at 500 or better with it, and tree lines at over 800 yards on excellent days. It will usually range a tree line at 700 or so and that is it's realistic limit. The 1200's have the ranging capability of the Leica's in my opinion, I went with the leica because of the optics quality. Nikon's have very dimn optics in their range finders. Hard to see in low light. I think Bushnell's are very similar in quality, but I'm a big nikon fan.
I used to re-load but now I "hand-load".
-- Well, at least I try