Finally decided to jump on the red dot reflex bandwagon, but did not want to spend $300. After researching reviews and watching some interesting YouTube test I ordered the Gowutar A20 green dot because it had a top loading 50000 hr battery, 2 MOA Green dot, shake awake, and clicker windage/elevation. $108.99 on sale, 20% discount code on the company website brought it down to $87.00! Now I need to order a Meadow Creek rib mount for my over/under.
Thought I'd share that brand if anyone is looking for a reasonable price green dot that seems to garner some good reviews.