Don't put the Multi Vector Console into the Tac Console sections use it in Sci or Engineering.
The MVAE is very viable it's Lt.Com Sci slot is great for Crowd Control in STFs.
The Dual with [Acc]x2 are better because [Acc]x2 is the minimum you should be getting on your weapons.
Dual and Dual Heavy both do the same DPS, but Dual Heavy fire more damaging shots slower where as Dual fire less damaging shots faster.
If your running a Tetryon or Polaron build the DC's are far better. With AP it's a hard call more shots mean more crits, but bigger shots mean bigger crits.
I was once DKnight1000, apparently I had taken my own name so now I'm DKnight0001. If I ask you a question it is not an insult but a genuine attempt to understand why. When I insult you I won't be discreet about it, I will be precise and to the point stupid.