They are really nice. Smith and wesson are good too but there is something about Peerless that I cannot put my finger on. They just feel like nicer cuffs.

They are nicer cuffs. Smith and Wesson quality has gone downhill. I bought two sets in he last 3 years that ended up with a loose single bar after one cuffing, which basically renders them useless in a speed application. I ditched all my Smith and Wesson and now use Peerless.

I rarely ever do a behind back demo. Very difficult for me to use keys.

That is a very hard question. Also best is very subjective and context dependant. Best for being covert and not carrying much extra weight, then Peerless 730C would be best. If you want maximum restriction then a TCH840 or Hiatt 2103 or ASP 650 would probably be best. For maximum security you might want ASP 650 with blue locking mechanism if the subject wearing them were fully searched or TCH HSH1. If you wanted the cheapest best handcuffs, Chicago 1000 would be a great option. Hopefully you can see "best" is hard to answer. As for my favourite, having so many handcuffs this is also hard to answer lol. I really like the TCH850 folding rigid, because of their uniqueness. I really like my Winchester WN40 because they are NIJ certified but have cool branding etched onto them. I really like Peerless 730C for their lack of weight and surface feel and I like the ASP 650 because they are a relatively light rigid smooth sleek handcuff. But I cannot really put my finger on a single pair I would consider my most favourite.

You need a shim. I showed this kind of thing on a video about when you have hinged handcuffs stuck on your wrist.

I am not sure. Amazon probably.

What is Amazon property

Peerless do make an over-sized model but I forget the model number of it.