I actually play a combat rogue, and i think its great.
even though you lose find weakness its still possible to crit into the 1k+(im not even close to 100% geared) with eviscerate
the main thing that makes combat rogues great however is ambidexterity this skill boost damage a ton, and its applied all the time( i mean who doesnt love 75% off hand damage)
vitality is ok however not really great but still a bonus( the subt passive is way better because you get a ton of crit and dodge)
oh and if you want to just try it out you can use the honor swords ( they are slow 2.7 attack speed) or you could use almost any of the deadmines swords( slow, and some give agility and or crit) buzzsaw, cruelbarb, blackwater cutlass
my rogue
Lidrelys @ Aerie Peak - Community - World of Warcraft
and with talents i really don't think that there is 1 best talent.
you can choose on your play style
however if you are super geared i would go with night stalker, because your damage is so high, and extra movement speeds helps in catching those droodz
if you are not geared then i would probably go shadow focus for the extra burst damage.
subterfuge is "meh" though in my opinion for a combat rogue.