I finally decided to integrate my Google Voice number with my Sprint number. I had 2 options: (1) convert my Sprint number to GV, or (2) convert my GV number to Sprint. I chose option 2 because everyone knows my GV number. One advantage of option 2 is that I can always separate the two numbers if I choose. With option 1, unless you pay Google $20 to preserve your GV number, you'll lose it after 90 days. Anyone calling my Sprint number will be forwarded to my GV, which records the call as coming from my secondary number. I don't consider that ideal (I'd prefer forwarded them to a message that the number is not in service which was my previous Sprint voicemail greeting.) So far, it's working extremely well. I've retained all the benefits of Google Voice (e.g., call management, free calls to Canada, discounted international calls, etc.) while dumping the need for 3rd party dialers. From what I can tell, as long as the call originates from my Sprint device, I still have the benefit of unlimited calls to mobile phones on any network. I'm not sure, however, if people calling me on my Google Voice number will benefit on their end (i.e., their carrier might recognize my number as being a landline). The bottom line for me is that I've pretty much committed to sticking with my E4GT at $50/month (rather than reverting to my TP2 at $30). While I no longer have "unlimited" minutes, my new plan provides me all the minutes I could possibly use. Summarizing my new plan - 500 anytime minutes, free calls to any mobile number, free calling to any 5 numbers, free calling after 7 PM and on weekends. In addition, I have no long distance charges to Canada and low international rates. The latest rumor is that Google Voice will be available for integration with other carriers in the near future. From my experience so far, I can recommend it.