I'm looking for a PIX for an office of about 50 users, each with 50 VoIP phones using SIP (if that matters). It would need to support up to 100 consecutive VPNs, some Point-to-point, some via the Cisco VPN client. It needs 3 10/100 (or 1000) ethernet ports. It doesn't have to be a PIX, could be an ASA. Cost IS a point of contention. Upgrading from a 505E.