Go for version 2. Much better software than version 1.3 and works really well for me. I’ve been using the beta since it first came out. There are occasional bugs in it (so it occasionally does odd things) but all the data stays on the forerunner as well so you can easily re-load the lot if you have to. (Though I have never had to - restarting the software if it does not seem right does the trick for me)
For free software it is excellent - much better than the Garmin software that comes with the forerunner. It takes a little while to find all the features you want and have it set up to suit you, but once you have it running your way, you can’t beat it.