I don't have any experience with them. ATN has a reputation for poor quality and bad CS. Having said that I am tempted to try one but haven't dared.
Short answer for a reliable entry scope I'd look at a Bearing Optics Hogster and put it on a Bobro qd mount so you can take it on and off your rifle somewhat easily with claimed return to zero repeatability. What your going to find is a rifle scope alone doesn't cut it. Your going to want a hand held scanner also. Scanning with a weapon mounted optic is not good on several levels. Your going to also want a tripod for your rifle (more like need of you don't have a scanner) welcome to the rabbit hole! I had a nightstalker from nightgoggles and wouldn't recommend one. I now have a nightstalker pro model and have been happy with it.
I strongly suggest staying as far away from Pulsar as possible. They don't hold zero and are garbage as far as I'm concerned. Good luck!