Thought ur brother played a warr on tsro? :D Ask him for advise ^.^
Well, imo the best pvp build is a onehanded/warlock, but to play this build you need tons of skill. for solo lvling its useless, but as a onehanded youll find a pt at everytime, so at esro itd be easy to lvl.
a warr cleric is the standart build, very easy to play but still fun and it still rocks. you can do almost everything with this build in sro except hunting uniques ^.^
And i never played a warr rogue so i cannot give a short review to this build, but they were hard opponents in pvps on isro, but idk how hard it is to lvl and to play them and i also cant tell you how much fun it is.