Great success with SFX
We have had a lot of great success with SFX over a number of years, and have actually found their availability of quality space easier to get over the years as they have grown.
One of the weeks we own is at the Donatello, and there are many owner complaints about TPU's. One of them being the cost in TPU's is higher to trade back into the Donatello than what they give you to trade out with!! In other words its so screwy you cant even trade back into your own resort if you want to!
From what we have seen and heard from friends, TPU's can work for you or against you. I understand one of the complaints is RCI changes the value of your TPU's which means inconsistent trading power. You may know what a unit will cost you in TPU's to trade in, but even with high TPU's, the space still has to be available for where and when you want to exchange. With regards to the space being almost always there, I am not quite sure I agree with that. Maybe in Orlando or Las Vegas, but not necessarily so in Hawaii in high season or places like New York.
We have tried RCI and II over the years, and while they have many happy customers, for us SFX has worked much better and for less money. One of the attractions for us is their bonus weeks that can be requested a year in advance, which is great if you can vacation several weeks a year.
One thing we have learnt in the nearly 20 years of owning timeshares, there are no perfect exchange companies, and just like banks or wirless phone services, everyone has their own preferences as to what works for them. If TPU's works well for you that is great.
Julie