There isnt a "best" build. It is about your preference, what makes you different than the rogue standing next to you?
Combat = general fighting / damange mitigation
Assination = Massive damage from behind / suprise, poisions etc
Sublety = stealth. moving without being seen. Striking by suprise etc.
You CANT have them all, you MUST choose.
Some will focus in one area, others will take a few skills from one area, and some from another.
What do you what your rogue to do? What role are you going to play?
Another side note, you can 'unlearn' your talents (for a fee - which increases everytime you do it) so if you get into level 20 -30 and decide you really screwed yourself with your tallent selection... dont worry you can redo them.