What do you think is the Best classes to use ? Personally I like Jedi Guardian/Dark Jedi Guardian Jedi Master/Sith Lord Giving you a combination on Force powers and Combat Skilz, + Force Crush rules !
It depends, if you like combat then weapon master, or when you like forcepowers then Sith lords
Jedi Guardian to Master All the Way!!!!! here's my advice on the best character: For feats, I recommend that you choose dual-weapon fighting all the way to Master Proficiency, allowing for more damage than a normal one hand attack - the penalties can really hurt with less than Master! Also upgrade your critical strike. Remember, this feat can cause major damage an even stun opponents. For max efficiency, later in the game, utilize multiple feats. Upgrade flurry and power attack later. If power attack is upgraded to Master, you will have the ability to slice through minor opponents in seconds.
For Force Powers, always go aggressive. In the beginning, the recommended power the game will give you is Force Sonic Scream. This is useless in my opinion. Instead choose either Force Push, Stun, Lightning, Drain Life, or something else that is more aggressive in nature. When you're leveling up, I suggest you get Force Wave, Death Field, Stasis Field, and Force Immunity as early as possible. Immunity causes force powers from enemies to be nullified. For the rest, just take what you like.
Jedi Sentinel, you need very much skills in the beginning. You don't really need the stealth feature so i use to save those points and use 'em after i get the Class Skill:Repair-feat wich is really useful when repairing T3-M4. Besides, Immunity: Stun, Fear, Horror is far more useful than the guardians Force Jump. If you play as a Light-sider then i suggest you should choose to become a Jedi Weapon Master but if you prefer the Dark Side the Sith Lord is quite good, especially when fighting a single opponent because you can use the force crush pretty much to kill your enemies very fast.
I do not think that in K2 you need immunities to those, and besides, Force Jump is FAR more useful(and an easy way to jump lol), and even if someone is using Stun or Fear, you can always get it from merchants(unlike K1, where you had to go around the whole galaxy to find the item you need).
jedi guardian then have a jedi watchman. apart from anything else the names are the coolest
Whatever suits your own playing style....
Combat focused, go for Weapon Master/Marauder.
Force focused, go for Jedi Master/Sith Lord.
At the end of the day, once u get to Lvl50, you pretty much have all the most useful feats and force powers..... including some you wouldn't go for anyway, whatever prestige class you take.