I own both (for about another week--Marriott is being sold.) They are different programs and each fits different needs. . A lot of people promote the idea that you get lousy trades with some of the lower-priced Marriott (would not include OP.) Our Marriott is in Orlando and off-season. We have had some terrific trades. Additionally, I have a friend who owns at Branson Horizons who traded his lockoff studio for a 1 BR at OKW in the summer and the other BR for a 2 BR at Newport Coast also in the summer (excellent trades.) Our Disney HH has been great--it allows us to visit HH for 5 nights in the summer at a fraction of what a HH Marriott would cost. However, I would never use Disney for anything other than a Disney DVC resort. I bought the Marriott from Marriott and have used the points exchange very wisely (our most recent use was 75,000 points for 3 nights at 47 Park Street in London which would have cost about $2,000.) However, the value of the point option has been dwindling. Therefore, I am not as big of a fan as I used to be for buying from the developer. My children are teens and we've found ourselves spending more time on cruise ships and skiing than we thought we would. Since ski trips are typically 3-5 days high season, timeshares aren't that useful (I am considering the Sheraton in Avon, Co though--but for now I've managed to get such great rates that it doesn't make sense.) I would caution you though about OP. Frankly, I like Vero better. More importantly, it is not as popular as many would believe. One way to gauge the popularity of Marriott properties is to look for availability using the owner discount (MOD) on the Marriott website. I was able to get reduced rates at OP over Christmas about a month ago--they also have reduced points rates indicating more availability.) Frankly, if I were considering a coastal location in Florida, I would check out the Hyatt Coconut--beautiful though not on the water.) If you are new to timesharing, consider rescinding to educate yourself more. $24,000 is a lot of money in the timeshare industry. Best of luck.