I replayed it with the banshee and only used lasers until I got to the station then switched to the stormfire as in one of the failed attempts i did save the station the first time and learned that it reloads you after you save it, so having the stormfire was then worth it since it got reloaded, and on the convoy parts lasers were enough to take out the bugs
I like the version of the scimitar in the game, the guns it has are cool, like a stormfire that doesn't run out of ammo, or a supid rapid fire mass driver