I've been using Dr Jack blipmap and RASP for over 10 years. Never had a problem, and it proved to be the most accurate forecasting tool around. And it 's free. Never used XCSkies, never had a reason to. Unless you live outside of the US I don't see a reason why paying for an inferior service with zero support. Sure the UI is much more modern and you can zoom in on the maps as much as you want, but this does not make it any more accurate. To the contrary.

Ramy