Voted the 2nd version, but I'm actually equally excited for all of them. I only played the first Baldur's Gate half a year ago, which is more then 10 years after playing the 2nd game. I did play it with a substantial amount of mods, basically the BGT mod (which adapts the game to the BG2 engine), and therefore probably enjoyed it more, but still... It felt pretty low on content compared to the 2nd installment. But if they make a good efford, I'll probably enjoy it a lot this time.
@BA: I actually thought the 1st game was more 'linear', as BG2 at least offered us a change of scenery. But I guess that's what you mean by 'casual friendly'.