The folks from InfoSys I've worked with have been less than impressive (the Windows driver expert who showed up on the first day of the contract gig with a couple of new books on writing Windows drivers under his arm, for instance).

The other H1Bs I've worked with have in general been good, often above average, and a few have been absolutely world class and people that I'd love to work with again . . . but the distribution is not what you'd expect for a program officially intended to fill in gaps of expertise and to supplement the US workforce where it is lacking otherwise unobtainable staff.