I have to pretty much agree with GB and Thayer. The glass is number 1.
I like the Bushnell on my .17 HMR (honestly I can’t remember if it is the Elite 3200 or the 4200, But the glass is good)
I have two Burris’s one Black Diamond on a Rem 700 22-250 with a Holland&Holland break and the other is a Signature on a Rem 700 .243 with a Holland break also (I can’t say enough good things about the barrel breaks though). I am not totally happy with the Burris, quite spendy for what you get.
Both Burris’s are 8x32 and I seem to have then on the 18 to 20 magnification 90 percent of the time.
As the other two stated before me, mirage can be terrible on hot days and you don’t want to shoot a none target critter. The heat off of your barrel can cause havoc also.
I have a couple of other configuration and AR with a Tasco 10X40 (cheap scope bad glass) and an Encore with a Burris Signature 4x16. the two Rem’s are my favorite though. If you can’t tell I really like shooting PD’s, those shots out past 400 are the best. I don’t really look at the one under 200 yards.