Rangefinder; What should I look for in them???

[LFM]

Okay Rangefinder is all new to me never use a pair and have no idea what to look for in a pair.

What should I be looking for in a Rangefinder?

How much should someone spend on a Rangefinder?

Any Articles to learn what they are all about and what to look for in them?

On a budget but need something that is worth the money. Any suggestions on what you got and why you went with them :?: :?:

Any information would be welcome...

Thanks,
Mike/LFM