Laser Sight Needed; Recommendations?

[MarcSpaz]

I am looking for a very high quality dedicated red laser for my M4 clone. I don't want a pressure switch nor an integrated flashlight combo. I don't mind spending a few hundred dollars for a quality product, but I am not going into combat, so I don't need a ATPIAL for $1,200 to $1,500.

I'm asking for real-world results because I bought a few for $300 or less and many of them didn't make it through a 6 hour day on the range before they completely failed. Any feedback on zero hold, temp range used, etc... would be very much appreciated.