If they're so similar in performance, then it comes down to cost and personal preference (looks, ergonomics, shot cycle etc). Assuming you can only get one, is the PS worth the extra money?
I've just bought a TX and I could't believe how well it shot straight out the box. All my other rifles have needed 2 or 3 frustrating hours working out how get any reasonable results but the TX zeroed in 6 shots and I was hitting golf balls at 50m (7 of 10 shots) within half an hour. The rifle makes me look far better than I am.
Also the PS doesn't come leftie.