a .com or a .ws?



I am a Comp Eng major and I am developing this small tool which I will be selling for a small fee. I need a domain name for my “company”. Ok so I am between two available choices: either a 8 letter .com or a 4 letter .ws .. which one do you think I should go for??
I think .com will be best.
Neither.

Take both the .info and .biz

.com is king and will be for a long long time. The others are for those unable to acquire the .com.
.biz is the ultimate in cheese wiz
no choice. .com

.ws means worth shit (actually means western samoa)

Take any open global domain (com,net,org,info,biz) if you want to sell globally, or a .us if you want to be associtiated with the US market.
I’d avoid repurposed Country code domains. For a busines .com is preferrable even if longer, but .biz a second choice.