Confuse

A month was passed away. I still try to find the best software Billing for my Lab. I was tried many billing program such as, Billing Explorer, Cafe Con Leche, PlayBilling, Cyborg, and many more.

I'm confuse with this condition, I can't find the best billing software for Linux Ubuntu (Gnome Desktop). Can you help me??? Please help me! I need your comment. Thanks before.