i prefer hinged cuffs. ya they're a pain to apply when someone is resisting, but it hasn't been an issue for me yet in 5 years i've been doing the job. when that day happens i'll re-evaluate.
I started with Smith and Wesson hinged but quickly found out that they were small and i didn't like the double locking mechanism.
switched over to a pair of peerless hinged and they were my favorites for a couple years. mine are the blued version. one day out of the blue they started developing a slight layer of rust. no matter how hard i tried in maintaining them, they would always rust. it got kind of old so i shelved them.
decided to try a pair of asp hinged. luckily my cuff pouch fit them with a little stretching. i like them for the most part. the key hole and double lock on both sides of the cuff is a plus. only problem i've had is the ratchet arm has gone on the outside of the pawl instead of inside it. has happened a few times, mostly with resistive subjects. i guess it happens cause the cuffs are polymer and theres a certain amount of flex causing this to happen.
i'll probably end up buying a pair of nickled peerless hinged again for my next pair of cuffs. i've had the best luck with peerless so far.