Is it worth buying USPs or any other pistol? What is the meta? Using glocks right now
For me, it entirely depends on what map and where I am on said map and if the agent I am using is better suited to have more utility. If it's a long map like Breeze, I take the Ghost a lot of the time. If I am holding double doors on Heaven I will rock a Frenzy or maybe even a shorty if I am holding tree on Accent. I don't personally use the Frenzy much on attacking side unless the team is doing a set site rush.
I think the fall back of Classic and light armour is always solid is most situations, there's obviously times when you would prefer something else, but it's a good all rounder and usually allows you to pick up one extra piece of utility over something like a Ghost of Frenzy. If you get good with the right click the gun can be deadly. Which personally is something I need to get better at.
There really isn't a set meta with the pistol right now at least that I know of. It's use whatever you think will work best in the situation you are playing and play into that guns strength.