Hello Bustos, and welcome to TBN! /forums/images/graemlins/smile.gif
I think if you do some serious reading in the various forums, you're going to find that the vast majority of people will recommend 4wd over 2wd, especially when you have a FEL on the tractor. You'll find that steering can be awfully difficult with a loaded bucket with only 2wd, and having 4wd should help in digging power when using the FEL that way. You won't loose traction as quickly, and you'll be able to fill the bucket easier.
I'm sure some of the others will chime in with some "personal" experiences.
Oh, by the way. You might want to take a few minutes to fill out your profile so people will have a better idea of where you're located and what you might be using that tractor for. Just go up to My Home at the top of the page, page down until you see Main Configuration, then go to the right of Personal Preferences and click on Edit. Then just fill in the blanks.
Good luck with your decision. Remember, regardless of what you buy, you HAVE to post pictures when you get it. That's one of the rules!! /forums/images/graemlins/smirk.gif /forums/images/graemlins/wink.gif /forums/images/graemlins/grin.gif