I pretty get the same hit chance on VATS with the Sniper perk as I do with my rifles with the Commando perk. Only advantage with the sniper rifle is that there's a silencer available for it while most of the rifles don't. I currently carry the brush gun and it's as powerful than the sniper rife. The strongest sniper rifle, however, is the anti-material rifle, which has 100+ DAM but DPS is 49(?) and ammo used for it, the .50 MG, is pretty hard to find, according to Fallout wiki. There are very few topics about this when I googled so I decided to post here and see if you've used this perk and found it useful. Should I get the Sniper perk or something else?
I'm a sneak character using both Gun and Melee for close range. If Sniper is a no-go, then I'll get the Purifier perk.