I just picked up a new strike eagle 5-25 ffp (came out 3ish months ago) for $1050. According to others the glass is approximately the same as the pst and it comes in a 34mm tube. Would be worth looking into
Most of the features of the new Strike Eagle > PST 2 but Vortex was quoted as saying the glass is of lesser quality. 31 Mils vs 20, 34mm tube vs 30, locking turrets vs not.
Glass may be more comparable to the 1st gen PST that I assume you are referring to, which is definitely a step behind the PST gen 2. But I haven't seen the new Strike Eagle so maybe I shouldn't comment. They list it as having XD glass but not the same XR coatings and no illumination.
You can sometimes find the gen 2 for $1100 used which is a pretty good deal. Its a great scope for the money.
The bushnell elite tactical and DMR lineups are good and can be had well under 1k and 1500 respectively.
Delta Stryker HD is an excellent option for slightly more money, has better glass, excellent turrets and tracking.
I haven't seen the new NXS in person but the older 8-32 models didn't impress me that much. I'm sure the newer ones are better and have great mag range options.
Some people will say the Athlon is a good alternative but I haven't used one.
I have a couple of Arken scopes and I am quite happy with them for the money, glass might be a touch lesser than that of the PST 2 but i need more time behind both to better compare before I write up a review.
At the end of the day the PST gen 2 is a great scope that will exceed the needs of most people. One area it may lack is adjustment range. I think I have 14 mils left on my 308 & PST gen 2 with a 20 moa mount....
Tracking > glass in my opinion but nice glass is always, well ... nice.