It depends on two things -- your ability to USE the 11 month window at your home resort, and the importance to you of getting a certain resort at a certain time of the year, or a certain view/booking category, or certain accommodations.
The home resort booking advantage only works if you can reliably plan and book vacations more than seven months in advance. Many families can and do. Many other families - because of work or family considerations - either can't or won't. You need to know which group you are in. If you are in the latter (can't/won't book early), home resort booking advantage means little.
For certain things, you will need the 11 month booking window, and in some cases will need to call exactly when your 11 month booking window opens. Examples include either BCV or BWV for Food & Wine, Grand Villas just about anywhere, any resort during the peak
DVC period between Thanksgiving and New Years. Other examples include Standard View (low points) at BWV, Concierge Level at AKV, MK view at BLT. If you don't care much about those things (we don't), home resort booking advantage doesn't matter.
In our particular case, we own at both OKW and SSR. We can book 11 months out, but rarely do. In fact, we almost never use our booking window, typically booking 5-6 months out. We travel during off-peak times (November and/or May) and have never had a problem getting the resort and accommodations we wanted.
I personally think either OKW or SSR are really great resale buys right now. OKW also happens to be our favorite resort. The price differential is so great that I'd be hard-pressed to justify buying direct.