Yoba...the folks that post here regularily will never steer you wrong. ABSOLUTELY buy where you plan on going to the most! Vero appears to have lots of incentives but you will have difficulty in getting the peak seasons at WDW resorts at the 7 months window without being highly flexible. Since OKW and BWV are sold out through
DVC right now, you're only site WDW option through Disney is the Wilderness Lodge Villas. If you decide that you want OKW or BWV, try some of the resale agents that you can find by doing a search on this board. There are many threads that give you lots of info.
My point is that you should spend enough time researching your purchase decision on these boards prior to hearing the pitch from DVC as you will be able to ask the right questions and challenge incorrect info.
Our family was lucky and bought at BWV last June before they closed sales. Our first stay will be spring break at Vero. Not a problem to make the reservation we wanted there at the 7 month window. I know that I would have had difficulty getting a BWV ressie for the same time at the 7 month window.
Good luck and the decision to join will be one you will not regret!!!
Dream it and you're there!
Off Site - '80,'82,'84,'87
Caribbean Beach - '92,'95,'00
DVC Purchase - 6/00
Vero Beach - '01