Hey Jaap-Jan,

First off with your squeeze-page I'd recommend using the same URL. There are a million reasons why you could use a separate domain, but people may be scared off or think you are an affiliate if they see the URL changing when they go from your squeeze page to your main site. You'd be fine either way.

As for the domains, .com's in general are way easier to rank for. There's no solid evidence that Google does give weight to one or the other, but by looking at the engines you don't see many .info's ranking well, not to say they aren't out there. If possible always go for the .com because most people are used to typing in .com's.

best,

Eric