In the game, can varied flight times be mitigated by bringing the equipment on-board? Also, out of curiosity, where are the flight times rules? My group has issues with the artillery rules every time we play, so I want to put together a binder that is composed of all of the artillery rules and how to use each of them.
I understand by bringing equipment onto the board you run the risk of units entering the minimum ranges for the artillery, but with pre-planning there is usually always something to fire at. I prefer to bring my artillery on-board, so when I look at which one to bring it depends on the rest of my force composition. Am I willing to dedicate a portion of my equipment to defending artillery and, if so, how much (usually something should defend the artillery, but how much BV is the investment is my question)? Or do I want my artillery to be able to defend itself (by use of secondary weapons) with only minimal units spent defending them? Depends on the game.
Personally, I have had more experience with the Sniper than the AIV, so I am swayed to the Sniper but that doesn't mean I am correct.