Mistwell
Crusty Old Meatwad
I find dexterity outshines strength dramatically when multiclass martial/rogue characters come into play. You can cherry pick rogue levels that really stack a ton of damage on to multiple attacks and you get a huge defensive buff by using the feat that allows you to add dex to AC as a reaction to an attack. Strength is only useful if you go two-handed and even then it is outmatched by a fighter/rogue very quickly.
You didn't reply to pretty much any of the points I made. Is there some reason you quoted me?