I guess if you're going to spend the nuyen and karma on restrictive gear and subscriptions why wouldn't you go with MBW 3? Not saying MBW are bad, but you're not getting Restricted gear and SkillJacks and subscriptions with the other options. It's not apples to apples. MBW are more expensive overall, but get you more.
Let's say you start with a character REA 5 INT 5
MBW[2] Initiative 10(18)+1d6(2d6) Avg 25
MBW[3] Initiative 10(22)+1d6(2d6) Avg 29 {5 of 18 31+]
Since I'm not buying it less than Alpha, 96000 seems to much to me to have a slightly less than 1/3 chance to go4 times instead of 3.
edit-and an activesoft[4] is 20k so that 96k is short of 5 skills for the MBW[2] character. And, I really would only use this option with a LOG 8+ Character (Rigger or Decker) and since they have other needs the MBW[4]+Skilljack[4] is already eating a third of 450k they have. To me, more of a problem to the rigger than the decker but this is not the thread to discuss that.