I bought the 2nd one because I think it was on sale at the time and I couldn't find that one when they first came out...the black and blue one is the 2.0 version of that I think.
The stand is from the Zellers/Target Exclusive Hall of Armour IRon Man line...and that LED is crazy bright!
They cost 2$ more then the regular 3.75 figures, but you get the stand with them...there are some differences though. War Machine doesn't have any of his accessories, except for his gattling cannon, and Mk.6 is suppose to be more movie accurate.
But are they worth the extra 2$?
In my opinion YES, yes they are...the stands are very well put together IMO.
If you don't have any of the 3.75 inch iron men figures yet, consider going for the Hall of Armour versions first.