I think I will convert to the new system as it opens up a few options that my regular week did not get me. I bought a Silver week to use and now I have access to a gold or Plat week, albeit for 5 nights. If I use the TS in partnership the Marriott Rewards program (or even cash/Marriott cheques) or even getaways through II - I can get great benefit from this system. If I am inclinde to trade, most of the TS that I am interested in have a FS Marriott Resort next door, so I can simply use points for two days to avoid the markup on the weekend nights. I like St. Kitts and all, but 7 nights is stretching it a bit. Five seems ideal with another 5 in PR or some near-by island seems more ideal.
I have been reading the TUG board, and even though I own a TS, cant understand why some people have 5-6 weeks, or trade for points.