Question : VoIP hardware suggestions for small organisation

After scouring the net for information for the past couple of weeks, I thought I might ask here for some concise expert advice.

The situation: Our not-for-profit organisation is considering setting up a VoIP system. Currently we have normal 2 telephone lines and 1 fax line being used by 8 staff. The number of staff may change (increase) over the next few years. All are in one physical location. All are using normal phones currently.

The dream: VoIP system with separate direct in-dial numbers for each of the 8 staff with voicemail and call forwarding (e.g. to mobiles when out of office) as well as the ability to send calls to extensions. Fax machine hooked up to the system as well. Also a normal landline hooked into the VoIP network for fall-back and emergencies.

The options I've considered (which may be totally wrong!): (1) Hosted PBX which means buying IP phones for everyone and switches and other networking hardware - quite an expensive option I figure. (2) Running a simple physical IP PBX (Cisco SPA9000?) with assorted hardware (SPA400 and SPA8000?) which then connects to one PSTN line and the VoIP service.

Just wanted to throw this out there and see if anyone had any comments? All comments welcome! I have virtually no experience when it comes to VoIP, sorry, which makes me wonder why I was asked to research this!

Answer : VoIP hardware suggestions for small organisation

Not going to upgrade to IP phones?