Have you seen the Cheesy Poofs (254) yet? If not, i suggest you watch video from either PNW or
SVR. They are absolutely INSANE, and they do not have a turret. All it takes is a few seconds of an unguarded ramp and you're either doomed or just BARELY going to scrape by. What makes it so good is, as you said, ease of aiming. 114, Eagle Strike, was pretty good also (turret), though they had a slow rate of fire (which i hear is going to be fixed this weekend at Davis).