I will eat anything once. I don't really have any strong dislikes, and there's nothing I'll "refuse" to eat. Truth be told, if you are a picky eater (or God forbid, someone who wastes food), and that is the first thing I learn about you, it is going to be very difficult for us to be friends. I'm not saying it's impossible, but you are going into my book with a question mark next to your name.
Before you go down the AES route, I'd try to figure out how much the games you really want go for. When I got into Neo collecting I was originally looking at an AES, but after realizing how huge the price difference was between the home and arcade carts I went down the MVS route instead. The very early Neo Geo games on the AES aren't generally that expensive, but games can get pretty astronomical. Especially if you want a copy of Metal Slug. That was almost the singular reason my interest in getting a home console died immediately.
I really have no idea what the current AES market is like, but I imported an MVS copy of Windjammers from Japan for a little more than a hundred USD. I'd recommend signing up at the Neo Geo forums if you have questions.
I kind of hate that Rorie has to be the one to deal with the worst of the worst, but he is amazing at it, and continues to do a fantastic job interacting with the community all around. Someone get that man a delicious Coca-Cola® beverage, cooled to exactly 33°C.
If your NES has the problem that all toaster NES's tend to have (the connector pins need replacing) it is a super easy job. Even if you're super mechanically inept it shouldn't take more than a half hour at most.