Thanks, guys, invaluable stuff. Have downloaded and digesting, slowly.
I am not clued up on overseas tax for US and Canada, but from the UK point of view, things are not brilliant with Cayman, as there is no double taxation agreement. Great that Cayman is effectively tax free, but one would get zapped by the UK tax authorities due to lack of double tax agreement (and this would make the Cayman tax residency ineffective). Same as much of the Caribbean for us. However, plenty of other reasons to buy....
Saw somewhere that IPG were considering Europe for a future project. There are some very attractive mortgage rates over here at the moment (around 4% is not unusual) and some interesting low tax countries (Cyprus, Croatia etc.). Hope they go for something on those lines, as 7.5% (Cayman?) is not immediately attractive for us over here.