VGF is more and more becoming a problem for studios even at times at 11 months out for owners. During
DVC's high demand season, late Sep to marathon weekend in Jan, there have been a number of times when the studios disappeared before 11 months out (because an owner can book up to 7 nights at 11 months out from date of arrival, owners can sometimes be blocked out at 11 months out by those with arrival dates just a little before theirs). That problem was created by the fact that VGF has only 46 studios, and points needed per night and the cost per point were so high that the vast majority of those who purchased, purchased to get only studios, i.e., both the points for the studios and most the points for other size rooms were sold mainly to those who only wanted or could afford studios, with the result that the studios have far more demand than supply.
As a result, I would not recommend buying VGF if studios are what you want and you want to go in the high demand season. Moreover, even if you usually want time during tthe rest of the year from mid-Jan to late Sep, you should likely not buy unless you can usually make reservations at 11 months out.
I am not sure I can even recommend Poly if you always want a studio because it could have some of the same issues. Few can afford the points needed for regular stays in the bungalows and those bungalow points are being sold, as are points assigned to studios, to those who will almost always want studios. Thus, Disney has once again created a resort where the demand for studios can significantly exceed the supply once the resort is sold out. Poly has a better chance of avoiding the horrendous problems at VGF for studios simply because Poly has so many studios but that is something we will not really know for a few years.