I have used Leupold, Swarovski, and Leica and from my experience the Leica is the best. Reads farther and Im not positive but the laser beam or whatever seems smaller so easier to pick out your target at long distance.
Swaro all the way! Can't believe I went as long as I did without one.
"Enter through the narrow gate. For wide is the gate and broad is the road that leads to destruction, and many enter through it.  But small is the gate and narrow the road that leads to life, and only a few find it.
If you find your self in a fair fight, your tactics suck!- Marine 1st Sergeant Jim Ryfinger
Friends don't let friends develop canonitis!-chucknbach
arguing over the internet is like the special Olympics....even if you win, you are still...special!
Lots of opinions on rangefinders. I use the Leica CRF 1200 and like it. I've heard a lot of good feedback of the Swaro too but haven't tried it. I would assume both are good and have pros and cons. The main thing is to get a good one. I started off with the $250 or $300 model and it worked for a couple years and gave out. If you are serious about all of this, buy once. I am starting to look at wind meters as well. I haven't stepped up to the plate but getting close. I did pick up one of the $30 or so dollar Caldwells and it at least got me into the game. No comparison though to a good one I'm sure. From what most have said, the Kestrell 3500 seems to be the most common choice. Good luck!
thanks guys.. i was hoping someone would say cheaper but i would rather buy once and buy right.. and still yet does anyone know where I can get one of those little bags on the comb of the rifle? I dont even know what they are called