Namecheap just added these hosting packages so no one would really know how they are with hosting.

Getting hosting from a domain registrar is a bad idea IMO...
GoDaddy's hosting is horrible from what I hear. Namecheap could be different, who knows. Why don't you tell us after a couple of months on how their support/speed/uptime is.

Personally I'd buy hosting from a company that provides hosting as their main service and domains from a company that provides domains as their main service.