I have a recently purchased 705. I now have used it for biking and for navigating. I've used it once for geocaching. I ended up with the 705 because after vendor discounts and Garmin rebate it was affordable plus, Most Important, it gave me growth room for anything I wanted to do in the future. It is optimized for biking and vehicle navigation. But, it can be used for just about anything. Plus, it has all the charts and maps available for it. At first I thought it was overkill. But, after using it I encourage you to pluck up the courage and buy one.

Oh yes, I should add that as with just about any piece of kit you will get a variety of opinions. Some are honest, some are shills, some are just noise. But, after studying just about every GPS enabled bike computer and looking at the declining purchasing power of our money I decided it was false economy to buy on the low end.