I would have to agree with everything all the others have posted. We bought a resale at OKW when we bought, because truthfully we didn't care which resort we stayed at when at WDW (so far, we like them all) and OKW had the best resale prices at the time. So far we have stayed at OKW, BWV, and VWL and have enjoyed them all. I always book OKW at 11 months out and if I want to try another resort I check availability at 7 months. If its not available we stick with OKW, which is great! Some folks say that they are not happy with Disney's transportation, and take their own cars when staying at OKW, but I have always been happy with Disney's transportation and look at it as part of the Disney experience. The only time I've ever taken my own car is when having dinner at another resort.
Unless you absolutely need to be at HH during the summer, I wouldn't buy there if you plan on using DVC primarily for visiting WDW. We have gone to HH every Feb. for 3 years, this will be our 4th, and have never had trouble getting a reservation. This year we even managed to get a Grand Villa and we're taking my sisters and their families as a family vacation! You will never be able to get a Grand Villa at one of the WDW resorts unless you own at one of the resorts that have them, and book at the 11 month window.
I figure we have the best of both worlds this way. I love HH, but would rather die than be there in the summer! It is hot as h-ll and extremely crowded in the summer months. Traffic is unbearable. Going anytime other than the summer is extremely relaxing and just the type of vacation we need once in a while. We go to WDW almost every year (we had to skip this year) and HH too if we want and still have time for one or two non
Disney vacations each year as well as long weekends. Yes, we are travel fiends!
Good luck in your purchase!