[Cortig]

- FYI, I curretly have both 5.1.3 and 5.5sp17 on my Mac and I don't see any problem. Both versions seem to use the same format of bookmarks, cookies, prefs...
- I don't know a thing about the pricing policy for 5.0 vs 5.5, but my v5 licence is currently accepted in 5.5.
- I would download online. It 1) has a smaller ecological footprint ;) and 2) ensures you you have the latest version available. (though I have v 5.1.3 and 5.5sp17, I exclusively use 5.5 - at this point of the beta process, I'm not even sure you'd need 5.1.3 at all anyway). Only drawback... you would have the nice box to keep as a souvenir :)