Cokin Z vs Lee Filters

Hello guys! Newbie here. I've been a lurker on this site and sometimes on this forum and decided to sign up so I can ask questions. I had a couple of questions with regard to these two filters. I know Lee costs twice as much, but I've read that Cokin ND filters are not true neutral density.


1. Will Cokin Z filters fit Lee filter holder? I was thinking of buying Lee filter holder + ND and Nd Grad filters and use Cokin's other filters (star, mirage etc).


2. If I buy a circular polarizer (even a thin one), will it fit the holder? (ex. Hoya HD POL or B+W POL).





As I am from the Philippines, I haven't seen any Cokin Z and Lee here so I'll be buying off the net. Any help would gladly be appreciated.