I try to keep my armybuilding under control in general. I think I have no more than 5 of each 25th Cobra Trooper and 8 CGs (a couple for custom fodder). I think 5 is a nice number for me. I don't do huge dios so giant parade formations aren't an issue. The most I'd use in any given set up is what you've seen in my Deadly Encounters shots. That was a LOT to pose in that confined area. I have enough to properly man the few Cobra vehicles I have customized for battle scenes.

So for me I try to keep it around 5 of any particular version of trooper.

Now I do plan on building up a nice sized Joe arctic force but those are going to be named characters so I don't count them as armybuilders.

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Of course that's just my opinion, I could be wrong.