hmm... this is where im at now, ill post up more later.

GE 28300EE2 DECT 6.0 Cordless Telephone For Skype and Land Line W / 2 Handsets $155
this unit has bluetooth, and all the options but just one land line(ie, comcat digital voice line) and skype. What if i want another line and that line was an SIPhone?

Panasonic KX-TG4500B 4-Line 5.8 GHz Expandable Corded/Cordless Phone with Digital Answerer $499.99
this phone has multiline and i assume you can enter skype SIP Proxy Server, Registrar and SIP Address and Skype would work on this phone. No bluetooth option but wired headset should work.

The idea is to have a Stereo Bluetooth Headset (A2DP) that handles all calls and audio from the machine and you can place/answer skype and voip calls while listening to music/audio. the perk spin off benifit, with a windows mobile based phone you can still place/answer mobile/SIP calls.

My current setup;
Linksys WRTP54G 2-Line Wireless Router - RingCentral Digital Line SIPhone into Line 1. Line 2 will be used for Skype.
Belkin Wireless Router
Comcast Digital Voice Cable Modem

Since I have a single line cordless, switching lines is becomming a pain. I was able to get Windows Mobile 6.1 installed on my T-Mobile Dash but the Internet Calling in Windows is tricky since its not avalible when you buy the phoen from your carrier. If i can get SIPhone/Internet Calling working on the T-Mobile Dash that solves free mobile calling and I would be able to switch the Stereo Bluetooth Headset (A2DP) between the T-Mobile Dash and a multi-line bluetooth cordless phone system.

You say yeah, but what if your power fails your $%^& up creek. The Comcast Digital Voice Cable Modem has built in battery for the unit but if everything else is dead it does you no good. Im looking into Solar Power Backup from The Sun for your House, Apartment and Vehicle and documenting it on hhttp://www.SolarPowerFromTheSun.com