Why not buy Marvel Legends. They are not SUPER poseable and the quality is not the same as say MAFEX, but they are sturdy, cheap and ther's a LOT to choose from. I find MAFEX and STORM and all the others are really good. Yeah, you cannot throw them into a wall, but the are so much fun to pose, with patience you can get them in pretty much any pose you want. You need to use common sence and you'll be fine.
MAFEX is doing a great comic book line, with both Marvel and DC, exactly what I am looking for. They have a bad rep and I remember, from all the botching and moaning online, to expect my first figure to just come apart straight out of the box. It didn't. Yeah, sometiumes a arm will come out of the socket, but you just pop it back in.
If you want study almost unbreabkle figures, Marvel Legends is the way to go. If you want highly articulated, comic accurate figures, MAFEX is the way to go. Lots of choice. I mix 'em.