I've been using my phone lately, and it does do the job. I'd just rather have a separate dedicated trip meter and speedometer display constantly going instead of having to take my hands off and cycle thru screens and apps. Also, the more apps I had running (s-health, g-maps, pandora, Bike Computer App, etc) the less battery life I'd have. I guess it's just how I'd prefer my set up and experience to be.

After doing some more searching, it's come down to a few choices so far.

Cateye Velo 9. - Basic, cheap, non gps. Would provide me with bare essentials.

or

Garmin Edge 25 w/ cadence. - More expensive, more options that I might find useful as I gain more experience and time on a bike, sensors that can connect to S-Health (and other things). Would save phones battery life even more.

I guess right now I'm leaning more towards the Cateye. As I said, I may upgrade to a Trek sometime. If I do, I'd likely get the Bontrager duo sensors. Spending money now on pricey Garmin sensors that I may replace soon seems foolish. The cheap price of the Cateye I can write off if I get a year out of it to hold me over until I get more involved. And perhaps at that time I'd be more willing to spend bigger amounts on a higher end puter.

I'll still be doing a bit more research on similar products for a bit. If there's any more suggestions, I'm all ears.

BTW I will check out the Wahoo app as well. Thanks for that.