I own a small business and I want to setup a PBX system. I don't envision ever needing more than 4 or 5 extensions but I do want a menu system with prompts. I'd like a Mac based solution but I can do Windows or Linux if need be. I've looked into Asterisk, FreeSwitch, and some others, but I'd like to talk to those who are more up on what is the latest, easiest, etc. TIA!