So - I will agree that dropped packets are a problem (I'm having them myself with Comcast Cable - argh!!) - but WiFi connections, except under the most _extreme_ circumstances, don't ever drop packets unless you have a RF/hardware problem that is unusual. (Or Contention - which is why I don't like to share WiFi on a consumer Wireless router) Latency over WiFi is < 1ms - which should be imperceptible to VOIP.

I should set up a Skype call from my MacBook Air tethered to my iPad over Verizon LTE to you - this really is a much worse scenario than WiFi - 35ms latency, about 1% packet loss - than my WiFi connection - but I still bet you would hear stellar voice quality (over my MBAir's Mic, no less!)

Honestly - WiFi really, really is not a problem with VOIP unless you have some contention, RF disturbance or really poor connectivity - something else is going on with you - I've done lots of Voice Tests ahead of important meetings when I'm presenting just to be 100% certain that my call/voice quality was 100% - and it's always been with Skype over WiFi.