My basic build for the shuttle is Engine Upgrade + Gunner. Together they make a pretty nasty ship. I know some people also like to put the advanced targeting system but I don't find it necessary and the gunner comes pretty close to guaranteeing hits at three attack dice.
My problem is that I have been building lists a few times and 8 points on upgrades to a shuttle is still a lot.
If you had to choose between a shuttle with just EU or Gunner what would you prefer. Please factor price into you choice.