It is not worth paying a big difference for Bold. I think Curve is like $99 ? now . If so, go with that, Bold is just too expensive, since it is new and all. Wait until after christmas, they may give $100 use it or lose it rebate card.
Oops since you are in venezuela, I have no idea how much it costs there, but it should cost much less, -- so it depends on the price.
9900, 18.104.22.1684 @ AT&T