My 64GB 3G iPad had the typical WiFi issues others were experiencing after I first brought it home (release day). However I tweaked several settings on it and my router and it's been rock solid ever since. After downloading and installing iOS v3.2.1 everything is still working fine and it actually seems a bit snappier...particularly Safari.
DVD to iPadDVD to iPad MaciPad transferiPod transferiPad to Mac transferiPad video converterMac iPad ConverterUp/download speeds and range are still very good. I really hope this addresses the issues others were having!