Quality optics, no frills - Aimpoint 9000L Red Dot Reflex Sight

This scope was the cheapest one that I could find that had all the features I really wanted: long-lasting battery, no parallax, sharp dot, waterproof (although I have not gotten it wet), long enough for two scope rings (so that it is durable enough to mount on a high-powered rifle). I would have been nice to have more features like different reticles or different color dots or magnification, but those are all 'nice-to-have's, not required.
Pros: No parallax, bright sharp dot, battery lifetime, waterproof
Cons: expensive

This review was written in the old system and had content requirements that are different than reviews written today.