Currently looking at the 3F (Best torso movement), the 3H (20 packs), and the 5M (Center mounted Laser for 'zombie'ing, though probably the first thing shot off).
The 5S looks neat, I know 2 AMS on the Locust 3M variant more than double its life expectancy, but it's the same issue I have with the K variant Atlas. NO interest in spending bills on a fairly subpar variant for a gimmicky defense mechanic, would rather just buy the XL engine outright if I really want it.
And the 4N....not very hard to see why it's the cheapest of the variants. One less missile rack, same energy hardpoints as two other variants. It's got a WHOLE lot of heatsinks though...

I just want to make sure my assessments aren't lacking something. I'm kind of trying to min/max here, but more so in how varied I can build the rigs, as I'm not a big fan of 'master and dump.'
Also, apologies if this is too fresh of a thread on the topic, I didn't/failed to see one about it in the recent pages.