i am kind of a mix of stealth, heavy, demo, and tactician. i love me some explosions. and they make for great traps and a good way to get around corners safe if i dont have a mirror or something. sometimes, its just seems a good idea to get some heavy ass armor, a bigass gun, and just walk in, and rockets are fun too. though i would probably like to use an Anti Tank rifle as a makeshift sniper as well (fan of sniping, stealthy approach when applicable). though a tactical yet loud approach is also my kind of thing if the sniper approach is impossible.
so, situational, yet the preference stays with snipers and assault rifles with explosives and a good pistol as auxiliaries.