I love my Sig Sauer Kilo 2200. Leica is also great, but more expensive and I think the Sig is as good.
Vortex rangefinder is no good - I like some of their other optics and have their rifle scopes and a Razor spotting scope, but I tried the rangefinder for one season and sold it immediately. It is slow in ranging due to multiple button pushes required, and seems much slower and less accurate than the Sig when returning a range, especially at longer distances.
The Sig Sauer Kilo is hands down the best bang for your buck when it comes to rangefinders.