with me, the wifi/uma allows me to have perfect service in my house...my phone was useless in my house until i got my 8320. it still counts againest my minutes though. if you add the H @ H plan for 10? or 15? sollars then ALL calls over wifi are free. anymore questions then please ask. im kinda rushed to leave out the door right now...im sorry.
dont forget about video recording for the curve too when 4.3 comes out