Netfirms is useless company, they don't give any advance domain management tool.
My personal experience with them is too bad there Support team is useless, The only good thing they have is cheap prices.
Before you buy any domain remember :
- Godaddy and namecheap are two best options around ( follow the link to view Registrar reviews
http://www.registerindex.com/ ), but if you are not intrested in trading your domain in future then you should choose any local firm. bcoz they will offer the best support bcoz of there limited users plus ease of payment will also be a plus point.
- always remember that most domain sellers( 95%+ ) are not direct Registrars they are Resellers, and they actually register your name using Godaddy, enom, NS services mainly.
- Before you register your new domain with GD or namecheap, search for latest discount coupons available. dncoupons.com is a good place to go.