I spent a couple hours trying to find the most stable configuration for a rocket capable of delivering about 50 tons of payload to orbit. This is what I came up with:
*It doesn't wobble at all *Quickly and easily maneuvers in flight and orbit *Fuel aplenty for flights nearly anywhere in the Solar (Kerbar?) System *249 parts (with MechJeb) *216.8 tons in total *About 51 tons in 100km orbit MY TITLE SUCKS - THIS IS NOT SIX STAGES OF SOLID ROCKET BOOSTERS! Here is an album with some images: http://imgur.com/a/3fMh8 The .craft file that is listed requires MechJeb 1.9.3 for KSP .17: http://fpk.im/HAnp