These two companies are quite different. Capgemini Invent is basicaly digital transformation management consulting and it's predominantly technology company. So most of the projects are going to be in technology area, digitalisation.
Huron is actually a management consulting company. What I understand is thet their specializatoin is more in health care and life sciences projects.
In terms of which company to choose, you need to look at the couple of things:
1 - what is the interest you have, where do you want to go? More on the technology side or health care? So if you have clear preference, so the answer is very clear.
2 - If you are looking for a generalist profile and don't have any affiliation in any if these areas, then probably from the prospective of opportunities that you might find and share custobility of the company and brand recognition etc, Capgemini would provide them better with Huron. Huron is still not so well known
Does it make sense to you?
Capgemini has a better brand recognition and in terms of exit opportunities this is a better choice