I use Tulsion. No reason; it was just what was sent when I first started out and I've never changed. This is one of those areas that cause argument with no basis in fact. (On CIU? God forbid)
So, if there's anyone near me (Southampton) who uses Purolite, let me know and we'll do an experiment to see if either of them is noticeably better or worse than the other. My details are on my website (link below).
I know it won't stop the pointless arguments (this is CIU, after all) but if there is a noticeable difference, one of us is wasting money buying resin that isn't as effective. So there's a 50:50 chance that you'll save some money. There's also a 50:50 chance you'll be proven to have chosen the more effective resin in the first place but at least you'll have the warm glow of knowing that I'll always be a little better off than I was. Then again, there's also another chance that they are the same. So those numbers are just rubbish.
Anyone?
Vin