I’ve used the Prime and the A. I didn’t like the Prime in the only game I used it in so I tried the A. The A has not let me down so I haven’t retried the Prime to see if I just had bad luck/off day with it.
Triple Large Pulse is a good start: then it adds a Gauss Rifle in. An LRM-15 for a bit extra punch. Reinforced chassis, enough DHS for Alpha Striking comfortably and for crit-padding. Ammo enough for a serious fight.
On a similar topic I took a look at the MUL after I responded and damn does the Dominion have a lot of cool mechs from other factions on it.
Jupiter, Atlas, Hellstar, Turkina, Stone Rhino, Night Gyr, Nova Cat, Grand Summoner, Savage Wolf, Hel, Archer, Black Hawk KU, Stormwolf, Pouncer, Phantom, Wulfen, Hellion
Not to mention a bunch of random Combine designs, older ComStar Designs, and a couple more Sea Fox purchases. It looks like we stole a couple Falcon and Wolf factories when no one was looking. I was a little surprised at the amount of variety we had.