Point well taken
I would certainly be doing research on the ones I like so I utilize it well, it is just that having never owned a timeshare, it is a bit overwhelming to understand EVERY system just based on theory and others' experience. As such, I have to figure out everything from acronyms to verbiage that gets thrown at me.
You are absolutely correct. There are so many different timeshare options, that it can be overwhelming, and essentially impossible, to learn it all. So narrow it down first:
Look at who has what you want. You can always trade into these, but it's easier and cheaper to own where you want to go. Trading comes with exchange fees and membership fees so if you are a bargain hunter, then opt to own vs trade. You won't find a system that has everything, but look for who has the most so you are trading the least.
The best one stop shop for looking at the various resorts are the exchange company websites. RCI (rci.com) and II (intervalworld.com) are the 2 big ones and have pretty much all the timeshares represented in one or the other. Look at the areas you want and see which resorts are there. Look in particular for who has the only resort in a particular area; that will be the hardest to trade into. Then focus on those systems. If you can narrow it down to just a couple, it makes your job of deciding which ones fit much easier.
You mentioned Sedona and Flagstaff: Wyndham has the only (I think) resort in Flagstaff and also has one in Sedona. However, the two cities are close enough that staying in Sedona is close enough. I'd look for an independent resort in Sedona and buy a every other year (EOY) during a school holiday week. That will provide a good local getaway as well as an excellent trader. Having access to the VRI internal exchange would be a real plus.
Worldmark has the most resorts near the national parks in the west so you might look at getting a small account. One of the pluses for WM is the ability to rent credits; i.e. an owner that can't use their credits this year will transfer these credits to your account for one time use. You can see the going rate and recommended resellers at
http://wmowners.com/forum/viewforum.php?f=91. You can rent in additional credits as needed for trading or booking without incurring additional maintenance fees.
WM is also a good trader. Look at
http://wmowners.com/forum/viewforum.php?f=90 for information on what trades WM owners have gotten. You can deposit first with II and try for a real bargain by depositing a low season week and hope to trade up; but this has gotten much more difficult and risky. OR you can just do a request first and have a very strong chance of getting most anything you want, within reason. By the latter, I mean you won't get a week that isn't deposited or gets out of preference in the home system.
Sue