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Any step by step guides written that show the best option for setting up the nav properly for cycling? Assuming I can get a gpx track on the HCx, which I can, because I've managed it before, then it should just be a case of following a pink line, right?
hippy-
The 35x (same as the 30x pretty much) will do ANT+ for cadence, speed and HR sensors and for navigation you basically have two options - following a GPX track, which is just a line on the map and gives you no turn by turn navigation, or following a GPX route, which will give you routing and turn by turn navigation on the screen with beeps at the turns.
You can also plan a route using the UI and it'll do turn by turn nav. There's a backlight on the screen if you give it a tap. The only input controls are either the power button on the side or the touchscreen, which doesn't work with gloved fingers (but will work with a nose!). The bike mount is rattly and bulky, as is the unit - it's not the round twisty one that the bike-specific Garmins use.
It'll sync back to Garmin Connect via bluetooth to your phone or presumably with a mini- (not micro-) USB cable.
If you want to take a look, let me know - I work near Great Portland St so it's presumably not too much of a faff to see it in the flesh.
rhowe
The disadvantage is that it's not a cycling GPS, you're spoiled by the ease of the Edge series being small, light and straightforward.
While it's a lots more reliable, the price you pay is that it's more complicated.