You might take a look at the Burris 4X 1.5-6 . It's 30mm, illuminated dot with pretty heavy crosshairs and good glass.
I put one on a Ruger American 22-250 1-8 twist for low light coyotes across the pasture or whitetail in the trees.
OK I couldn't resist. Sorry. Just the way you worded it about deer being in the trees struck me as funny and I couldn't resist the opportunity to make a funny.