Believe me I know how hard it is to decide on skis and you're not alone, it's gets frustrating. I would not worry about the non metal core of the Bushwacker, it's no noodle. It just doesn't have the dampening characteristics of the metal Brahma or other metal skis like the Volkl Kendo. Like I said to Peter below the metal Brahma feels sluggish in direct comparison to the Bushwacker. The scale may not say a huge difference in overall weight between the skis but trust me, there is. I found the Bushwacker and my Kabookie very good to excellent for firm snow grip as an expert technical skier, metal not needed. Only when pushed very hard on the steeper pitches and if the groomed snow turned marbly and unpredictable the metal versions took over.
SD95 will feel slightly more balanced than the Blizzard lineup, Blizzard always feel a little long out front and a little tip heavy, especially the metal versions. The 179cm SD will be definitely a little shorter than the 180cm Bushwacker, just the way Line measures. SD95 will provide more float because of its width, feel smoother and quieter because of the maple core(almost has a rubber layer feel to it), not as much rebound and energy as the Bushwacker in my opinion. If you wanted a little more width for powder days SD95 is hard to beat, does everything very well. Bushwacker had more energy and felt quicker edge to edge, depends what you're really going for.
Other choices since you asked are Scott "The Ski" in 175cm, absolute blast in the bumps, GREAT hip dragging carver, tight turn radius, great rebound, smooth, under rated ski! Not as slithery, surfy, and won't pivot as well as the others. More powerful tail, more traditional carve to it.
Volkl Kendo is an incredible classic. Light and energetic but powerful. I own the original non rockered version and won't get rid of it. I can hammer any mogul run on it but it takes more work than skis with rocker in the tips and especially the tails. Least forgiving of the bunch, awesome on groomers.