I have a 32 G Itouch that has the multi-tasking software that Apple released around June.
I also have a new Iphone 4 that I got in July.
Both work with the X920Bt.
I stopped using Pioneerlink when Pandora suddenly released a new update in August that
was "optimized for car radio head units"
The Itouch connects with a Clear hotspot that I keep in my car. Its basically Wifi to the Clear hotspot
and then WiMax to the Clear tower. It works very well - but I do have one problem. When I get home,
and the Itouch sees my home WiFi network it wants to leave the Clear hotspot. Not really a problem when
I come home. But before I leave my house, I have to be sure that my Itouch is on the Clear WiFi and not
my home WiFi.
You get music both ways - but if I forget to change the WiFi, its obvious when Pandorra stops after the first song.
The Clear service is a 4G wireless service that costs me $25 a month. In reality, it was almost free because I fired AT&T DSL and my VoIP provider when I got Clear. I was paying them $65 a month, and now I pay $82 (including taxes) for a "home modem" (replaced DSL), a VoIP service (replaced Voange), and a "on the go" service. But Clear's signal is about 5 times as fast as my old DSL modem - and I sure as hell couldn't use DSL in my car.
So for an extra $17, I got about 5 times the speed at home - and - a very nice high speed internet connection in my car (or whereever). I've used Apple facetime at the baseball stadium once - in conjunction with the Clear hotspot.
The Iphone is a little more solid than the Itouch (I don't pay Clear for a 3G backup - and I don't have that problem of making sure what WiFi network I'm on if the phone has a 3G backup).
Overall - I would say the actual application has gotten WAY better since the Pandora update allowed me to dump Pioneerlink.
The other Pioneerspecific app would get hung often. That went away with the new Pandora software. I used to find myself literally turning the engine off at intersections just to reboot the radio so I could shake it from whatever goofy state it was in.
Plus the new software lets you take the Iphone/Itouch from the cable without causing a problem.
That was extremely "iffy" in the past.