I also went Vanguard for ME2. Played as an Infiltrator in the first game, and although its fun, sniping enemies isnt as satisfying as getting up close. Vanguard is heaps of fun, heavy charge combined with a good shooty or smg is my main go-to attack. Shockwave is good for clearing out hordes, and the ammo types means your versatile.
In any case, I would recommend any biotic class, I find those powers to be the best.
In any case, I would recommend any biotic class, I find those powers to be the best.