I don't put much stock in how many PD's issue a particular gun. These decisions are usually made with MUCH input from buerecrats who would'nt know a barrel from a but stock and mainly focus on which gun is less likely to get the jurisdiction sued...I.E. Long heavy trigger pulls are a good thing to these morons becasue it's unlikely that a wounded dirtbags lawyer could convince a jury that the officer AD'd his/her weapon.
Asking random LEO's is also a mixed bag because many of them carry what there handed without question and only fire when there required to qualify.
This site however, has many knowledgable shooters and LEO's who can point you in the right direction.
As for me, I'm a die hard 1911 guy who turned my nose up at poly guns for decades UNTIL I saw the XD .45 ACP's 13+1 capacity which at that time was going for a miniscule $490.00.
I bought it and though no Poly Gun's trigger will EVER be as good as an SA 1911, It is MILES better than the Glock trigger and internally looked to be a MUCH stronger design. If Hi Cap Poly floats your boat, you can't go wrong with anything in the XD line. Also, there still one of the most affordable service caliber pistols available.