I like my Hi Lux Micro-Max B-Dot reflex sight, that I just bought for around $269. It rivals the Aimpoint, and does have a 55,000 hour battery life -- setting the 2 moa red dot at midrange.
I also just bought a BSA 3-12X40mm Contender Class rifle scope for my Kimber Classic 22 for around $140, that I bought from Airgun Depot. I like it very much, and it has excellent clarity in the lenses.