Falcao has done it for several years in La Liga and there was interest from several clubs apart from us he could've signed for. James, following his WC performances, doesn't look to bad for Madrid either. My point would have been that those players attracted interest of better clubs in better leagues, whereas Garay didn't as it seems or he chose to go for the money, which says a lot about his ambition. Laporte's age is significant, because he'd be a typical United signing. He isn't the finished product yet, but could develop into a great centre-half with United and Laporte has already established himself at a good club despite his age.
Edit: The reason I probably don't have any problem with signing Laporte despite him being so young is because United didn't do so badly with young players in the past and neither did van Gaal. Also, I just don't see the experiecend centre-half or the leader available everyone is crying out for.
Garay was constantly linked to us, to the point it was actually ridiculous much like Sneijder. If he was or is as excellent as you are saying than there should have been some truth in the rumours and United would have signed him, since we are surely attractive enough as a club for him. United didn't go after him and that says it all really. I actually think that Garay is decent, too, don't get me wrong, I just don't see why he's suddenly supposedly so good as some are saying. Mostly it's desperation in my eyes. We had the chance of signing him in the past, if the rumours are to be believed and we didn't seize it. He's changed clubs during the summer and wouldn't be cheap, so I'd rather want United to invest a good amount of money on a very promising centre-half, who has a bright future ahead of him than some stop gap.
I dont think the Snjeider comparison is fair because snjeider at the time was a spectacular player and theres no doubt about it. though garay is not a world class CB (there are very few in the world at the moment anyway) he is the finished product and is in the top 10 CBs in the world for me. I dont know why we would chose a 20 year old over that. Falcao had 2 seasons not several at Atletico just like Garay had a few in la Liga with racing and madrid. he has all the experience required and experience and maturity is what we need at the back at the moment.
Buying young players was united's style. i dont think its like that anymore. we should be buying the finished article to stablizie the team rather than not solving our porblems by buying another young player.