What resort are you thinking of converting. You mentioned II, of course II doesn't have points. As a rule, it's cheaper to buy something else than to convert to a points system unless you do it as a purchase conversion.
We were think of converting our Liki Tiki (Island One) II resort to points. They have their own point system with Club Navigo. Right now we are thinking down the road a couple of years when we want to come down for the month of January, we could get four weeks out of our 3BR unit instead of two. It will cost us some money, but they have come way down on the cost, so we think it is a good way to increase our flexibility. Also they have several other resorts that this will make available to us. I guess we just need to decide where we want to pick up another TS for go for it. It is just that I am much more familiar with the II system and feel a little inadequate about going into another system. We do love the points system though. I didn't realize that some resorts were both. I think I will get on the RCI website and see what I can find out. Thanks for all your help.