I have two P14 Single Action Hi-caps. They are both great guns, each has over 2000 rounds through it, probably a lot more, I don't really keep track. They are not cheap. Very reliable as long as they are clean. They don't need to be spotless, but they do need to be clean. I really like the wide grip, I have big hands, if you have small hands try one on first. Both of mine are very damn accurate from the factory, I would say the most accurate of any 1911 box stock .45 I have shot (not custom or cup models). With all that ammo they are heavy. Especially if you shoulder rig it, FYI best shoulder holster I've found is Galco SS2 (the wide one).
The LDA's are nice too, I don't own one, and only know one guy who does, and he's happy with it. I personally do not like the radius trigger pull on the LDA's, 1911 triggers should go straight back, not pivot, however the LDA trigger does break really nice..I am sure I could get used to it.
If you are LEO, call Para (416) 297-7855, they will send you their individual officer purchase kit, it is VERY helpful ;)