Internet.bs offers the lowest. You could also try checking on draygo.com, i don't know if this really works,
It depend on your taste but the best is to check if they are offering promos to get the best deals but for me I will go for hostgator or blue host.
GoDaddi is inviolable in the sale of the domain. You have constant action and discounts so that you will go with them cheap!
at the moment is 1and1.com offering $5 .com/.net/.org domains and $.99 .info domains. It's only for the first year tho.