What would give me better recording quality, a MTR like the Fostex MR8 Mk II, or an audio interface like the Presonus Firebox, i don't have a big budget, $300, also I'm hesitant to buy an audio interface because I'll be using a laptop that's a few years old and don't know how well an interface will work with it.

By the way, I'm not looking for professional quality, just something decent, and i can not stretch my budget any farther, $300 is pushing it as it is.