I never dated either so my advice is probably worthless but anyway:
If no attraction to guy one, he'll know if you keep blowing him off. Stringing him along would be saying yes to more dates.
Re other guy, he may think you are just being friendly and not getting the hint. If you'd like to go on a date with him why not just suggest that? It's less scary than going over to your place which is a very intimate more advanced thing to do.
