The title of the post and your question inside don't match. Is your question
Is INSEAD better than (or worse) Oxford?
OR
How easy is it to work in US after INSEAD?
Let me take a shot at both of them
a) Is INSEAD better (or worse) than Oxford?
INSEAD as a business school has been around longer, has a much wider alumni (I'm talking pure business school alumni and not as a university system) and if you care about rankings, is usually ranked above Oxford (well, globally INSEAD is considered among the top 9-10 programs in the world - typically M7 + LBS + INSEAD). But it depends on what your priorities are - like you want to study in UK..
b) How easy is it to work in US after INSEAD?
From what I've read, not very easy. INSEAD has a great reputation in UK/Europe and Asia. Not so much in US though efforts are underway to boost presence in US. At this point, not too easy to get a US job out of INSEAD (part of the problem is visa restrictions and location)
For consulting, INSEAD is considered a great school.
Since your question and ultimate interests are unclear - Hope my notes above are of some help.
Othello
Folks,
My goal is to possibly switch to MC/GM after MBA. I know that INSEAD is considered as a "consulting" powerhouse. I am currently in the US and would eventually want to move back to US. Would appreciate your comments.
Thank you.