If I may...
...for what is worth, this is how I look at the two players:
Beltran. I believe the assumption that Beltran will only get better is not born out with the stats. If you believe OPS is the best indicator of a player's ability to hit like I do, Beltran has not really shown much improvement in that regard. Consider:
'04 -- .915
'03 -- .911
'02 -- .847
'01 -- .876
This is not to say that he won't improve on these numbers, but there is nothing that shows an improvement, or at least much of one, is imminent. Furthermore, even if he does sign with the Yankees it means nothing. Beltran, when he is hitting lefthanded, is not a dead-pull hitter, and Yankee stadium only favors those lefties who pull it down the line. At best, any anticipated benefit will be negligable and, at worst, it could actually hurt him if he changes his approach (ala Giambi). Again, this is not to say that Beltran will not improve but there is nothing there that indicates that any improvement is imminent.
But then there are the SB's. I really don't know how Jackal comes up with these 50 SB's. There are two things that come into play with SB's, opportunity and desire. In both accounts, don't you think that they would be lessened after he signs a big contract? Even if they weren't, how could you assume that they would be greater for him to steal 50? This makes no sense to me, but then again, it could just be me.
Pujols -- May I point out two things about Pujols' season last year -- 1) He played hurt through most of it. And 2) He changed his approach from the season before. Witht the first point, how it affected him is unknown. It may not have much at all, but I think it is safe to say it probably hurt him at least a little.
The second point is what I want to focus on. If you'll recall, at the beginning of the season Pujols got a lot of ink for wanting to lower his K's and raise his BB's in order to have more of the latter than the former, which he did in spades. That's a heck of feat by the way. Not too many power hitters in the history of baseball have ever achieved that. Anyway, while doing that in the first half he really lost his aggressiveness, resulting in a poor (for him) OPS of .998. Look at the second half, though. He started striking out a little bit more and his walks dropped, but there were still more BB's than K's, but he regained his aggressiveness and he had an incredible 1.154 OPS over that time. In other words, he reached that balance between selectivity and aggression.
It is my opinion that, with good health, Pujols is on the verge of a season that may be historic. I am talking triple crown historic. I am talking about possibly making a run at .400 historic. I am talking about you kicking yourself in the ass all season if you take Beltran ahead of Pujols historic.
It is my humble opinion that you cannot expect more from Beltran than what he gave you last season and is more than likely to be less. With Pujols, however, you should expect and probably will get more than last season.