Nice review!
The only things I'd add are these:
There are adapters for the 510 available right now and 401 adapters are on the way.
As far as dripping versus carts go, I've got the Prodigy 510 setup and have used both methods with good success. Dripping it gives a very strong throat hit and extra thick vapor. It also gives you a very immediate sense of when the atomizer is getting dry because the taste comes through more distinctly than with a cart.
When using a cart, I've found that the standard polly fill doesn't wick as readily with the Prodigy as it does with stock 510 batteries. This seems to have to do with the hotter bridge drawing fluid into the atomizer more quickly than the polly is willing to give it up. But, when I pack my carts with Lipton Pyramid bag material, I find that the performance is practically perfect. The fluid wicks out at a nice rapid rate, keeping the atomizer very wet for many drags. The Pyramid bags are made of a plastic mesh that absorbs lots of fluid but also lets it run out quite freely when the atomizer draws it in. The only "drawback" to using a cart is that the throat hit and taste are both somewhat less pronounced. With a filled cart the hit is closer to what you get on a standard 510, only it's the best 510 hit you've ever gotten and it's consistent from drag to drag until the cart starts to run dry.
