samirhuli,
Regarding pharma stocks I am not too sure at this stage which co from among the ones u mentioned is going to create the max wealth. But most of the US facing pharma companies who dont have regulatory hurdles are sitting pretty and are on track to make decent gains in next few years.
Regarding your comments about missing the bus, in case of the stock you are tracking or the girl you are wooing, its never too late to take the plunge.