Shooters. Have only briefly tried the others, my main issue with the rollers is the relative inability to use the walls.
My current fav is the Aerospace MG. It took me a while to figure out how useful the seeker is. They are awesome for getting to other parts of the map quickly (on certain maps) and great offensively as well, accounting for nearly half my kills.
I've just recently discovered I can now move in squid form without leaving a trace and it strikes me with that this could be very useful in combination with the rollers. As it is, it's pretty useful in a firefight and for sneaking up on people.







