Just ordered an M&P 15-22 to use as a trainer and for my son to use in a few years. Looking for a RDS similar to an Aimpoint Micro. I don't need an Aimpoint for a range 22, considering a Holosun ( not sure which one, something with a 2MOA dot in red) or maybe a Vortex. Anyone use either and have an opinion. Would like to stay around $200 since I only paid $300 for the rifle.