Choosing the right alt

[Quark]

Rogue.  Some kill damage is gear dependant, most is just skills and talents. 
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While soloing, my damage runs about 45% Melee, 20% Sinister Strike, 10% Backstab, 10% Ambush, 8% Eviscerate, and the rest is "other" - though mostly poison IIRC. All but one of the listed skills is highly weapon dependent.

Addition - if you want a Rogue to solo, go Combat. Don't go Subtlety/Assassination.