Before buying mine, I spent two days in the shops dry-firing every 1911 I could get my hands on. To me, the natural grip, balance, and that unique trigger are the reasons to buy a 1911. I checked fit and finish, sights, and trigger feel. I believe that these are the key differences in 1911s.
I decided that for the money, the Para SSP had the best trigger feel for the price, out of the box. It falls into that large plus-or minus $1000 range. However, its trigger felt like that of a more expensive gun. It had that smooth pull with that "glass rod breaking" feel.
Also, I like the idea that I support a Canadian manufacturer.