"all modern plastic guns have poo triggers"<--this is simply not true unless you specifically mean you PREFER the feel of a trigger made of metal on a metal framed gun. i can understand that but the all encompassing statement is false.
i'm going to give you all the answer/solution of a safety levered trigger(ala glock) in a polymer pistol that is specifically designed from the factory to have a very good trigger where you don't have to spend extra money to get a smooth pull,crisp break and very short reset.
...but first.
i started shooting TDA a long time ago and got used to them with no problems at all including getting pretty good with the first DA shot. these first pistols were all metal guns. i never did nor was i into doing trigger jobs during this time.i didn't see the need for that.
....but than something happened.
i got myself a walther p99 AS and suddenly everything changed. i got so used to it and practiced alot with it that now all of a sudden all my previous pistols felt like they had a heavy trigger with creep that i felt alot more and realized that they all had long resets. the p99 literally spoiled me.
now it seemed that suddenly i was into doing trigger jobs on everything else i have/had just to bring it closer to the p99 AS trigger and it's been the trigger i measure/judge against when it comes to a service/duty/defencive type pistol ever since,so please don't tell me what i know to be true. again,if you don't like what the frame or trigger is made of,that's another matter,..and target/competition pistols are also another matter although i have to say that some of those that have a TDA still don't have a better trigger.
ok,now your solution to an out-of-the-box glock type trigger polymer pistol that's already good from the git-go and specifically designed to improve the trigger of the model it replaces and where you don't need to spend anything extra to get a clean,smooth trigger without a heck of alot of pretravel and with a short reset.
it's called,..the walther PPQ. (the PPQ is NOT meant to replace the p99 AS)
don't take my word for it,go to the gun shops and try out the trigger but be fair,it'll be a brand new pistol so also compare to others of the like that are also brand new,....back to back.
by the way,my carry P99 AS,which has many thousands of rounds through it and which is completely and 100% still stock with no modifications whatsoever,has a DA trigger pull weight now of about 7.5 lbs and is smooth as silk. the DA started life with about 8.8 lbs and it was pretty smooth when brand new.(do not believe waltheramerica which states it has an 11 lbs DA and 5 lbs SA,that's incorrect)
a few days ago there was a gentlemen with a thread on here about having a BHP in which he had worked on the trigger. his end result was a pull weight of 7.5 lbs iirc and that is a SAO steel pistol. i wasn't going to post there just to brag that my TDA had a similar weight but in DA,but i'm saying it here for this thread and purpose. most older designed pistols have a DA pull heavier,like from 12-16 lbs from the factory and their SA tend to be heavier than the p99 too. of course,you can pay or perform yourself a trigger job to many different models and bring the weight down,smooth it out and sometimes even shorten the reset but that's not stock any more.
there are a few other polymers that in stock form have a pretty descent TDA trigger too,like the px4,..but the px4 trigger compared to a new p99 AS still has a heavier pull,a longer pull length and a longer reset. the fnp and fnx also are pretty good but still no dice compared stock. the sig triggers also come close but no cigar stock.
so please don't tell me what i know,that a polymer pistol simply can't have a good trigger even completely stock. it's all subjective to the individual i suppose though.
something else i wanted to add: imo,sometimes a little heavier but very smooth trigger is better than lighter but not smooth at all. a short reset is very important to me though.