If you are planning on playing the game longer, I suggest playing a rep char next. Rise of the Hutt Cartel has a different storyline for both sides, and the other expanshuns have "slight" differences.
What rep class to play however... Trooper and Consular are pretty weak to be honest, so you would be stuck with the same archetypes (yet different advanced classes maybe) again.
Jedi Knight is a decent Kotor1-style hero story, if you get around being the only one doing real work, while the council parties all night. A good pick for KoTfE for spoilah reasons. I prefer female, because SNAAAAKE is such a bad voice actor. Only friendzoned by Laura Baily in that case tho.
Smuggler is pretty much a collection of funny scenes glued together by the usual "get rich, mmm credits" theme. You can pawn off annoying Twilight Sparkle to some noble in the end, which was totally worth dragging the naggy bitch around.
Pick male and you get some emoshunal engaging fade-to-blacks along the way. LS soft heart, DS greedy bastard.
Trooper is "Hurrah, not-'murica!", but it has it's moments when you go darkside and just shoot people in the face. Male again, or a certain sad scene will just make you shrug and move on. Propagandabot companion is adorable and Elara is my favorite waifu of the game. Doesn't say much considering the competion, but I dig her accent. Think ensign Temple but less childish.
Consular story is... slow. Sage animations are barely visible, companions are boring. Pick Shadow instead. Only saving grace is the female voice actress when darksiding. Adorable bitchy towards the council sitting on their fat asses and thinking awarding shiny titles makes up for it. Don't pick male.