NYbike as you said,
"I can upload data to a pc, but I haven't done that since I first bought it because I found it wasn't necessary to see the data on screen."

The guy I was talking with said that the wireless tend to give you a lot of capability that he found he didn't use. And it was fussy. Lotsa parts/additional purchases. (This may primarily be a feature of the Borntrager wirelesses)

He said and I agree, that uploading data wasn't somethng that he was that interested in. Now I have a Polar FT7 which does let me upload minutes of exercise, and other data to my computer. I find this motivating but I'm not sure I want to upload my Polar info AND my bike computer info. I DO want to monitor and work with cadence but I'm not sure I need to upload info to get that.

Because I am relatively new to getting a snazzier bike and now computer, I'm not sure I need the expense of the wireless when I'm not sure what exactly I want.

So in summary:

Advantages:
Wireless, fewer parts

Disadvantages
relative expense
features I likely won't use
fussy
Not wholely sure what it is I want at this time.

But that said, I'm still open to some other ideas and that's why I'm posting on this topic.

I am finding the discussion helpful.