They're a ton of fun to fly but I have to agree with everyone else that you should not spend a single SP point on them. It's not whining or bitching or people trying to say anything that isn't the best is crap here. Dropships are horrible. Let me set the scene for you (feel free to ignore this if you're not still thinking about flying dropships):

You're playing Mario Kart and you've battled your way back from last place to third. It's the final lap. The finish line is in sight and the two players you have to get past seem like they're only inches away. You feel like you're in the Matrix as you weave around the green shells your mortal enemies ahead fire back at you. The fake item boxes don't fool you for even a moment. You powerslide around each turn with skills you didn't even know you had.

Your heart is pounding as you swerve into back and forth barely catching your rear wheel on the last item box of the race. It all comes down to this. You know this is your moment of greatness. You deftly maneuver your kart with the precision of a surgeon, catching the last item box on the course with only your back tire. Your breath quickens as the items spin first quickly, then slower and slower. Each items ticks slower and slower, each item stopping for must be an eternity. First a red shell, then three green shells. Your chest freezes as the damnable slot machine finally comes to rest on the most beautiful sight you've ever seen: three glorious red shells. In your triumph you swear they shine with a golden glow so bright it hurts your eyes and yet you find yourself unable to look away. You trigger finger moves into position, ready to unleash your volley of rufescent Testudine carnage like a thousand demons screaming out of the deepest pits of hell.

But at the last second it ticks over one last time and you end up with a single goddamn banana. Both racers ahead of you cross the finish putting you in the lead just in time for a blue shell to slam in to your face spinning you out in to your own banana peel that you just fired in the vain hope it might somehow do anything other be a stupid piece of ****. You watch helplessly as the other races fly past you before you limp over the finish line a broken and defeated man.

Then suddenly your dog runs in to the room because he heard the neighbors doorbell and is too stupid to realize after 5 years living with yout that it's not yours and no one is at the door. He snags your controller cord with his face, ripping your Nintendo off the shelf and smashing it to bits on the floor. He now has the controller chord wrapped tightly around his neck and completely freaks out. During his frantic efforts to extricate himself he bumps in to the table behind causing your very last beer to spill on to your brand new iPad. You barely have time to replay in your mind the scene earlier that day where you politely told the store clerk that you were absolutely not interested in purchasing the replacement plan that covers accidental damage when the phone rings. It's your girlfriend who is calling to tell you she's leaving and that her new girlfriend is more of a man than you'll ever be. And then your car explodes because honestly by this point **** you.

That is how bad dropship are.

PS. Your dog also chokes on the chord and dies.