Boy, that's a toughy alright. If I were in your shoes, and the one job was just slightly more desirable than the other......given comparable salaries........I would probably take the one that has been offered. Even if you accept the position, it can't hurt to check in with the recruiter every now and then regarding the other position.....who knows, if you are already employed and happy, perhaps they would sweeten their deal to win you away.