My Nikon 440 is a good compromise between price and performance. At under $200, it is in the low end of the price spectrum (there are laser rangefinders out there for more than $1000) for a laser rangefinder, but has an 8x optic and a scanning laser. It does sometimes have trouble picking out the flag itself from the background clutter, but I can always still get a pretty good reading from a bunker lip or a grassy slope, or off of one the players in the group ahead on the green. I like it best for getting the exact distance to various hazards and obstacles for tee shots and layups.

The $50 one I would NOT recommend. There are some that are nothing more than a monocular with a scale inside.... they are generally useless. Get a laser rangefinder with a scan feature at the very least.