If you like to vacation in different spots, I would recommend the growing, popular website VRBO.....Vacation Rental By Owner.
Timeshare can be tricky to master how to use. It takes a lot of advance planning and it's easy to rent prime location timeshares, like ocean front Maui, but probably not Oklahoma.
There are also a lot of time shares available on the resale market, which can be a good deal.
Timeshare differ between companies, Westin versus Marriott, so definitely do a little research about the companies and what they offer, etc. We have a Westin Time Share, ocean front Maui. We have gifted our weeks to charities for auction and twice to couples as wedding gifts, when we cannot use them. We love the beds at Westin...they are the best. We accumulate points with the timeshare and use them to stay in hotels for non-vacation travel. For instance, we are staying for 'free' in Edmonton, Alberta in a couple of weeks for a dance competition.
If you're not easily persuaded, you could plan ahead and attend a Time Share sales pitch and receive lots of freebies and get a good idea from one of those what the current costs are, and probably even a free weekend, by agreeing to their 90 minute spiel. We've done that in Mexico and Sedona, AZ and walked out with a slew of incentives, and did not purchase anything, like free dinners, free parasailing, free drinks, free cabs, free blankets, tequila, etc.