Well i am using the co.cc since a long time and i am thinking of buying a new domain as .com so can anyone tell me where will i find a best service in these.
Friend, you can buy domain at any place, because after all you are going to just point your domain to your wehosting server. The most important think you should concern about is which web hosting company is the best for your site. It's no matter where you buy domain, after all it's owned by you after you have bought that.