Buying volcano...easy valve or solid valve?

aloha. i have found a plethora of information to tip the scale towards purchasing the behemoth. i am torn between choosing the easy valve or solid valve, mainly due to this being my first purchase/encounter with what hopefully turns out to be a life long companion.
another question looking for an answer. anyone ever flown with vapo on board? if properly cleaned can transport be legal/troublesome?
thanks for any answers/suggestions
aloha