I got spriter pro when I started using AppGameKit and I think its great, haven't needed to use anything else except paint to create the images so its fine for me, but theres a free version which I didn't see until after which apparently does most of the same jobs too or also Spine which a lot of people use which is also free.
I wouldn't get spriter pro for the lip sync though - it works but its complicated /not well explained (kinda expected as its technically 2 products) and the file size jumps up hugely
life\'s one big game
spec= 2.6ghz, 1gb ram, 512mb gpu, directx 9.0c, dbpro and classic