I like Uncle Mikes Kydex holsters and Blackhawk serpa holsters too. I guess the real question is what and where do you plan on carrying your firearm? Truthfully one of the best all around holsters for the PT92 is the current US military M9 full flap holster which offers protection and practical carry options at the sametime.
This style holster can be bought surplus and comes with many options for different style carry (shoulder, removable flap, etc..). Cheaperthandirt.com usually has a huge selection of holsters.
I'd check and see what if any the competition regulations says you can use, sometimes they have rules covering holster style. But I like Kydex holsters in either belt, pancake, IWB or OWB. I have an uncle mikes with the extra top strap that goes of the hammer/receiver.