UB, I am all for the 'Red Dot' scope. You have seen me post about them before. I have been using them for as long as you been using your Holosight.
I say 'scope' but I use a zero power scope with red dot.
I only have used it on shotguns for Fox, Coyote and Turkey. Good red dot even on the sunnyest days. The two I have used are the AIMPOINT AND TRU-GLO which have a dial to increase or decrease the brightest of dot.
I don't think you have to spent too much money for a good 'red dot'.
PM me if you have any questions.