just using this as a placeholder for later. This gun looks like a solid candidate for high level survival missions: http://warframe-builder.com/Primary...7-7-134-6-141-6-265-7-138-11-329-7/en/2-0-44/
still better than the Soma Prime in terms of raw damage... if you are lucky enough to own one now, here's my update: http://warframe-builder.com/Primary...7-7-134-6-622-7-451-6-141-6-138-11/en/2-0-44/