KOTOR or not to KOTOR?

Hey,

I like non-linear RPGs, like Oblivion, Morrowind, Mount and Blade (it's good. Don't trust Gamespot!) and the old stuff like Baldur's Gate and Fallout 1&2

Yesterday I saw KOTOR in Dick SMith for $5. I had prevoiously played it but didn't like it (that was before I got into RPGs), so I left it for Railroad Tycoon 3, which I like.

What are the pluses and minus' of KOTOR?

Thanks