We have started using igloohomes for our holiday domain. We have several deadbolts which all work well. I was a bit nervous about the retro fit locks, but we have had two installed now for about a year.
For one of the properties I wanted a double sided cylinder (because there is only one entrance to the property and I wanted to be able to physically open it if needed). I needed to try a couple different locks, because some were too stiff to be turned. So installation for that one was more of a hassle. The other one was pretty straight forward. (I guess it would be nice to see an igloohome cylinder, so that you don't have to physically turn the key?!).
It has now been about a year, and both locks have been fantastic. We are very happy. Very convenient.