I have astigmatism also. I had an EOtech that was decent but had durability concerns. It's weird, sometimes the Aimpoint Dot "flares" more than other times even at the same brightness setting.
So I just bought a used TRS-25. Got it mounted on my AR and took a gander.
With my right eye, the "dot" looks almost like a crescent moon. With my left eye, it looks like the lady on the womens bathroom signs.
I'll have to get it outside and see what its like in the brighter light and how I can hit with it.
This is not meant to be a MOA rifle, more like a MOM/MOV (minute of man/minute of varmint) so I might be ok with it. For the price, I figured I couldn't go wrong.