I am currently in the process of evaluating various VoIP services, particularly Vonage and CallVantage. I know there are others, from Verizon, etc., but I haven't looked into those in any detail. I did a forum search and found sporadic information (including another sub-thread I had posted in), but much of it is now outdated, so I figured I'd send out a new formal request for help. Keep in mind that I am looking to completely replace my existing telephone service, not augment it. I do not need to have software that allows me to make calls from my Mac, I just want to pick up my phone and dial. Here is what I see as the key Pros to moving to a VoIP system as my primary home line: 1. Cut to the chase - I'll save at least $20 per month on my bill between local and long distance service, and perhaps as much as $40 depending on the plan. Not tons, but it will subsidize my TiVo habit. 2. Tons of e-services, including e-mailing voice mail. Sweet. 3. All the major calling features, including caller ID, etc. Of course, there are also Cons: 1. Internet out, phone line out. Although I have a cell phone for this, and call forwarding could probably address the issue, it's still a bit of a pain. 2. I've heard of latency issues on calls of around a second or so. Not horrible, but may be distracting. 3. Seems difficult to have multiple phones attached unless you have the base stations that broadcast to multiple handsets. 4. Not sure how it would work with my security system, which needs access and control over the phone line. What I am looking for is input from anyone who has had these services for at least a couple of months who can comment on service (customer service, phone reliability, sound quality), ease of installation and setup in a security system environment, or using multiple phones (can I simply run a phone line from my converter to my internal phone line patch panel?). Sorry for the long post. Thanks for any input you can provide.