Does anyone have an opinion on Suunto and the MC-2G Global Compass? Is there any disadvantage to a global compass?

I used to have an old silva. When I took it over seas, it developed a bubble inside the liquid. It still worked ok, but the bubble would interfere with the needle a little and it made me less confident in it's accuracy. My thought is that if bubbles forming inside a compass is normal when traveling on an airplane, then buying a global compass might not be worth it.