I'm assuming their credibility isn't very much?Both have the same credibility if you ask any European business! So this question is to broad you need to explain towards who?
In regards to ease! Well Seychelles is very easy takes less then 2 days to get your company while Mauritius can take longer. Again it depends on which agent you are using for both.
Thanks, that helps a lot. I'm looking at Class I at the moment.Depends on whether it's a Class I or Class II GBC.
A Class II (offshore company) tends to cost around 2-4,000 USD first year and about the same in annual fees. I would be hesitant about anyone offering it cheaper than that, but it is certainly possible to find.
Class II GBCs don't require any local presence, so if you are talking about Class I, the fees are significantly higher and harder to predict as they tend to be a bit more of a uniquely tailored setup.