Thanks for all the info!

Re: GPS, yes I like having one along, but I always carry my smartphone anyway, so I have one there. Since I virtually always plan routes in advance -- usually over familiar territory -- the GPS is for after-the-fact data, not for finding my way home.

Re: Cadence, even no longer than I've been riding (again), I can already feel when I'm in my best zone, as it were. That's usually about 75-80 or so. Initially I was thinking I'd really want cadence, but the more I think about it, if I had to chose it might go. Plus, if I have a reference of seconds I can count.

Re: Price, at some point I'm sure I'll refine what I like, dislike, want, etc. and will replace this with the "perfect" unit for my needs. That's why the low price point - This will almost certainly be a learning purchase... kinda like my current bike.

It's starting to sound like the feature set will decide, with a slight preference toward wireless if all else is equal (I don't mind installing a wired unit, but like the wireless look better).

One more quesiton: Is the sensor/transmitter 'always on' as long as a battery is installed, or is that what "auto on" refers to on some models (i.e., turns on only when motion is sensed)?

Thanks again.