Had trouble getting my 3G connection with Rogers to work. I scanned through another forum and there were many many folks having all sorts of difficulties getting their connections to work.

I called Apple and the guy there had me reset my network settings (Settings -> General -> Reset -> Reset Network Settings). This worked like a charm! ^

And in 1 morning of use, I've gone through 50MB of my 250MB plan!

I still can't get my Bluetooth headset to paid though. Other than that, my iPad experience is quite positive. ^