Popular Weapons

AC/5 : Chain fire 2-3 and they are brilliant, single ac5, not so much.
Medium lasers: Just because it is extra damage for a ton. good range, good damage.
Large lasers: Because they support the AC/5 so well, and blue lasers look cool.

I used to love the AC20, but 2 ac5 make your target hide like nothing else (maybe ac2's but they are like throwing spitballs) and it sounds great,
2x ac5: BOOM....BOOM.......BOOM...BOOM as opposed to
AC20: BOOM...........make a cup of tea........... BOOM

 

LBX10. I love that damn thing. Never used it before but I recently put together a Hobo build for the K2. Now I love it so much I switched up my (F)Atlas build to use them too... and I never use my (F)Atlas. I just want everything that can have LBX10s to have them. Just in case I choose to take it out of the garage that day.

 

Mlas, because of the Jenner-F.
AC/5, because it's versatile with good damage. Four of them (say, on a CTF-4X) gives you a fast-firing AC/20 with awesome range.
AC/2, because their range is unrivaled, and the cockpit shake is excellent. It's about equal with UAC and Gauss for me, but I think I use them a bit more often than either of those two..

 

Gotta jump on the LB10X lovetrain. That thing sounds like it should be so meaty.

Second place to MPls because buddabuddabudda, third to PPC Classique for MW3 nostalgia.

 

LBX, AC20, Medium Laser.

I'm unsure of a build where I don't use at least two of these together.

 

I have all 3 on my jager, destroys peoples day.

The LB10X runs on a lot of my mediums, 1 ballistic hardpoint gets the shotgun, 2 and i swap to a couple of ac5.

 

I am really not surprised to see this. The medium laser is, pound for pound, the best weight to damage to heat weapon in the game.

 

ERLLas, AC5, and Gauss Rifle
They all have a very good effective range. The ERLLas and AC5 have nearly matching long range and max range making them pair well.

 

The LLas, LBX, and SRM4 are my bread-and-butter. However, I can basically sum up my recent experiences this way: AC/2, or How I Learned to Stop Worrying and Love Dakka