I spent last night reading all kinds of threads on Steering Gear Boxes.
Basically PSC is a great company and makes a great product (I'm actually surprised that price is so reasonable).
Durango box isn't needed unless you have big tires 34"+, but it does has shorter turn lock to lock which might be nice and feel slightly quicker in the steering. Durango box is $170ish around me NAPA etc.
The stock TJ rebuild from autozone etc is $140 and all the vast majority of us need.
So to me, the PSC doesnt look bad at all for $160, although, shipping and possibly return core shipping might be a pain and $$.
If you want something now and run 33's or less I would just go stock TJ replacement from a local place.