Thanks for all your info.
Btw, we only go to disneyworld once 3 years ago. We'll definitely not wanting to visit Disney several times a year! So, maybe it's not worth to buy a resell (I'm referring to the BWV or BCV).
Last time we flew there, rented a minivan, and rented a 3beds/3baths townhouse in Windsor Hills Resort (2 miles from Disney). Very nice! It had our own private swimming pool and 42 LCD in the living room.
I truly appreciated for all the thoughts. Thanks once again!