DVC (direct) was our first timeshare! We purchased 400 points direct right after Bay Lake Tower opened for sale. What we paid direct is actually about the same as what resales go for still to this day, so for us direct was the way to go to retain all of the direct benefits.
Today, it's a much different picture. BLT resales are going for $95 a point average but direct from Disney I think it's the same price, or almost, as VGF, and you have to get on a waitlist and hope a contract you want gets snatched back through ROFR or foreclosure.
If I were looking at buying DVC right now, I would buy resale. Every time. You can't go wrong with any of the resort, but these would be my top choices, with my reasoning.
Bay Lake Tower: This is the most affordable Monorail resort. The prices only stand to go up after the Poly comes online. It's a bargain at $95 dollars a point compared to VGF at $165 right now and whatever Poly will be when it becomes available. And after that, there aren't any more monorail resorts to add on to. So, I see this one retaining its value for a long time. The MFs are also the lowest in the system. That could change, but for now it's very reasonable.
Animal Kingdom Villas would be my second choice, and here's why: The value rooms represent one of the absolute best bargains for your DVC points and they go fast. You need to own points here and book at 11 months. Also, the club level rooms are pretty special in the DVC system with their concierge access and they go fast too.
Saratoga Springs Resort would be my #3: It's a lovely resort, but pretty far away from everything. The reason this one is so popular is because there's a great balance between lowish purchase price and reasonable MFs. Most people who own here don't stay here. It's pretty easy to get into basically any other resort at the 7 month window using your SSR points, during low to moderate seasons. High seasons are a different story, and if you MUST travel during school breaks (Spring break, Thanksgiving break, Christmas break) then you need to own at the resort you want to stay at. Otherwise, you'll have great luck using your SSR points wherever you want to stay. Even during the summer (non holiday weeks).
Other people would have a different top 3 list for different reasons. For example, if you wanted to be near EPCOT during the food and wine festival, you'd want to buy at Beach Club or Boardwalk. If you wanted to be at Wilderness Lodge during christmas, you'd want to own there. Same thing with Grand Floridian at Christmas. Old Key West has it's own super-fans too, because the rooms are the largest in the system. But this gives you and idea!
Also, I'd like to add that we added a bunch of Wyndham points to our portfolio about 18 months ago (thanks to the great advice here on TUG!) We've been very, very very happy with them and have traded into DVC through RCI twice! We rented out our DVC points and paid all of our MFs for both properties. So, after you get your feet wet with DVC, you might consider a cheap resale at a resort that trades through RCI to have access to additional time you may not have gotten through DVC directly. Just one other perspective!