Ironically, the WVR-6R is still more useful at short range, though it's not one that I would use frequently, because like the Banshee, it's weapons just don't really fit its role.
While I realize that the AC/5 is a horribly weight-inefficient weapon, it still enjoy it on my favorite MAD variant, the 3L, because it has range that matches the rest of the weapons and the role of the mech.
The problem with the Banshee -3E is that, in addition to it's inefficient engine, its weapons just don't sync well with it's movement profile, mass, inclusion of hand actuators, and torso-mounted weapons, which would indicate that it's intended to close to melee range and pound the crap out of the enemy. Give me a 4/6 banshee with a Large Laser in place of the PPC, and an AC/10 in place of the AC/5, and drop a couple heat sinks to make the mass work, and you have a winner, IMO.