I am one of the folks who GregT referred to....I first purchased the Trust Points from MVC....and later, after discovering TUG, and learning other more cost effective means to add to my vacation ownership, purchased a Grande Ocean week on the resale market (that I use each and every year for stays at Grande Ocean).
I have not really responded to your initial post from a satisfied owner perspective because I am not just a pure Trust points owner as you were seeking input from. That said, since there are perhaps few here that are, I will say that although its a more expensive way into the program, I unfortunately did not own deeded weeks prior to June 2010 that could be enrolled into the system, and I purchased prior to hybrid deals being offered...and as my first purchase into the system, I would never have had the balls to purchase points resale hoping they would work, so I purchased Trust points from the developer. I did know what I was getting into (sort of) as my in-laws have been long time MVC weeks owners, so I was very familiar with the villa product and felt that even though expensive, I could still get long term value from the Trust points.
As somebody who would never rent from an owner or use any of the other myriad of vacation rental sites (too afraid of showing up and it being a scam and there is no room at the Inn for me), I compare my "value" with what I would be paying on Marriott.com (because if not for the ownership, that's where I would be booking) and in doing so, I still see value in my pure Trust points purchase. Granted, it may be a 20 year payback, if I only used what I purchased, but I usually rent additional points (which adds to the value I receive by being a member), and I have rented points for my kids who have also used my membership in the club to get discounted weeks which again adds value, I would say that my payback on my points will certainly be less than my initial 20 year estimate when I take in all of this extra "value" into consideration. Keep in mind, I paid $9.20 per point or so as I got in early, so that helped as well.
Anyhow, to summarize, I am very happy with my Trust points ownership, I have always gotten my desired villa size, view and time period as I plan far enough in advance and I much prefer the instant booking ability of the points program vs the waiting and uncertainty of the II trading system. If I had to do it all over again, I would still buy the Trust points again today as the flexible, go when and where I want to go portion of my vacation portfolio ....but since hybrid deals are available today, and I know what I know, that is the direction I would likely go.
I do however acknowledge that resale weeks are a tremendous value for those locations where you want to always (or at least most of the time) want to return to as we do with our resale Grande Ocean week.
Hope that helps.