Out of the 4 Banshee Variants (including the "La Malinche"); I reckon the BNC-3E and the BNC-3S are the best. Least Hardpoint-wise. The La Malinche has an extremely useless Missile Hardpoint... If you're gonna have a Missile Hardpoint, least have 3 or more. Any less on an Assault Mech is just useless IMHO. Why do I say 3; well look at the AS7-DDC. It has 3 Missile Hardpoints and so it can mount 3 Streaks whilst still retaining an AC/20, ECM and Large Lasers!
Regardless; the BNC-3S; is very similar to the Boar's Head; but with everything in the Torsos.
BNC-3S "Banshee's Head" (STD340, 1x AC/20, 6x ML & AMS)
Smurfy MechLab: [Link]
Speed: 58 kph
Primary Weapon Group: AC/20
Secondary Weapon Group: All 6 Medium Lasers
Tertiary Weapon Group: All 6 Medium Lasers (Chain Fire)
This build runs hot, really crazy hot. Anyone who's piloted the Boar's Head will know how this run's super hot. Seriously, I suggest you watch your heat. For the love of god, don't ever overheat!!
Now I know there are more Energy Hardpoints, and you're thinking, you can reduce some Heat Sinks for more Medium Lasers. I suggest you don't. You have enough heat problems as it is already, and eating Ghost Heat is not worth it. Instead, outlast and out-think your opponent. You'll do more damage when you manage your Firepower.
Well this is the case on the Boar's Head. I would believe the same details apply to this Banshee. Funnily enough, this Banshee is a lot faster than the Boar's Head. Well, not much faster, but hey, turning speed to use those Arm Shields!!