I have used one of the Italian kegs for a couple years, and more recently acquired a brand new one made in India. Right away a couple differences I noted was that the posts are not labeled in or out, and the posts I got with the Indian one had poppets that were not permanently installed into the poppets like my Italian one.
With the liquid dip tube, I find that I have to manually hold it in place by reaching into the keg while tightening the post, otherwise the dip tube will rotate around and end up pointed who knows where.
As far as welds, I have not noticed anything unusual about them on the indian one vs. the Italian one. Overall, I find that they are nearly identical but for the differences in the poppets and the dip tube which are probably insignificant to most people, I just happened to take note.