i agree with Seen.to that GoDaddy is the best. ultimately, yeah the prices are or may be a little higher than namecheap, but with a coupon thats usually always available it costs less.
I like http://www.ipowerweb.com/ - They used to have like $3 .com registrations, which is what i got aljaud.com for but they recently raised it to $6.50 which is still a nice price.