The down side of the GRF-1N is that the armament isn't suited for in-fighting, thanks to minimum range penalties, and a 6/9/6 mover will exploit that shamelessly. It's a great sniper and harasser when used against 4/6 opponents, less so against other 5/8s, and at a disadvantage when faced with a 6/9, or God forbid, a Jenner.
The WLV-6M is a very good design by 3025 standards, but the vast majority of its firepower is concentrated in one arm, leaving it with a blind corner, and practically disarmed if it gets dis-armed. I like it, but it's not a favorite by a long shot.