An update on my recommendation.

I still highly recommend you see your prospective purchase in action before you spend money.

That said here is my experience with my Garmin 705 bundle that included heart rate monitor and cadence/speed sensor.
>First 705 had a defective altitude sensor. Exchange through REI-Online was smooth.
>Second 705 works just fine. But using the word "pathetic" to describe Garmin's documentation and manuals is too kind. Their sales literature is convoluted so you really don't know what you are getting until you get it.
>The USB cable delivered with my bundle is a Charge/External Power Only cable. It does not make a data connectiion. Nowhere does it say the USB cable is Charge Only so I assume it is defective. No questions asked REI-Onlne is sending me a replacement.
>I've used the 705 for both bike and car. It works just fine. In fact, even if you have gps in your phone this is better. However, for car navigatiion it isn't as smooth or easy as the large screen dedicated car units. That is reasonable since it is not a large screen dedicated car unit. It is a reasonably packaged everything in one package unit that comfortably installs on both bike and car.
>The sales literature doesn't tell the buyer the CityNav on the microSD card included in the bundle is not updateable, After I discovered that I went back to the Garmin web site. I discovered that fact is not in the sales portion of the site. It is in the map update and purchase portion; an area a buyer is unlikely to visit during the purchase process.

In short: The 705 deluxe bundle is a good all-in-one product. Garmin, whether by design or accident, has poor documentation and somewhat deceptive web advertising.