I am newby to Voip telephones.
My objective is use up available mobile broadband monthly capacity on existing mobile broadband accounts when I exceed my "free" call minutes on my call plan.

My Samsung captivate phone appears to go okay using 2talk with CSipSimple app.

Is there much improvement in sound quality, ease of use with a Voip phone hardware in comparison when using the 2talk softphone on a windows notebook across vodafone mobile braodband?

If hardware option is the way to go then which voip would be recommended

cheers