Thanks for all the replies.
The IA8 flakka truck is a good choice, however, IA8 stuff is only allowed for friendly games with advanced consent from your opponent. So, I have two of them, but sometimes find I am forced to change the list at the last second when a player objects to anything IA8. It is less infrequent now, since I am proving to the local that IA8 is not overpowered as the rumors had previously inferred.
There are two players that have heavy air armies. One is the Screaming Eagle player I mentioned before where his six squads of vets are in planes and he has more planes for support. The other is a necron player with six of those flying crescents that are both shooty and transports. Both of these armies are hard to defeat, even space marine players are hard pressed to survive the carnage. You have to tailor your list just for them if you get any advanced notice that you are going against them.
Of course, I have three or four lists ready to go whenever I attend, so I just pull out the one I think will be the best list for the day. The problem is that we don't have time to switch lists once gaming starts, so if my second game is against the air cav armies then I get beat up pretty bad, and if I use my anti air army, then when I go against a hoard I get get creamed. (everybody gets two games, then we have to share the room with magic players, so the chances of a third game are slim) The games are maxed at 2k points, so there is room for most anything, but the time limit is the ruling factor.
OH well, it is only a game, but it is nice to remain competitive for all comers.