I use the EOTech Vudoo 3-18 on my .22LR. You want a minimum of a 20 MOA base and enough internal travel to get you out to 400 yards.
I also like the Bushnell LRHS, DMRII, and XRSII. You can find those all in the used market for $1000 and under. I got my DMRIIs for $800 each.
I also like the Bushnell LRHS, DMRII, and XRSII. You can find those all in the used market for $1000 and under. I got my DMRIIs for $800 each.