I spoke with the developer of Ascent several times over the last 2 yrs. He has no time to port it to Windows. I ended up by a MacBookPro so I bought Ascent and love it. It blows away everything out there for Windows, including SportTracks.

Just bought my 705 after using a 305 over the last 2 yrs. Still reading through this entire thread and learning the 705. Used it on my first ride yesterday and like it. One thing I noticed that it doesn't do that my 305 does, it holds onto a course if you tell it to "Do course". I always set what course I wanted to ride the night before a ride. On the 305 I would just turn it on in the morning and hit start and I was off. With the 705 I had to tell it to "Do Course" before my ride because it "forgot" what I had told it to do the night before. I am running the latest and greatest 2.50 upgrade so that wouldn't be it, probably a limitation of the unit as of now.

Waiting for my map software to arrive so I can see how it works with that.