I have four Batflecks now (two from BvS, two from JL) to rotate in the trinity display, but for me along with any of those Batflecks it's JL WW and now JL Superman. I missed the boat on MoS and BvS Superman when they were available at retail prices.
Eventually I may get a custom head sculpt for WW.
Of the four Batflecks I have I like them best in this order:
1) BvS chest modded and with custom drape or wired cape
2) JL Tactical suit with parademon stand and blaster
3) JL standard suit with custom double-sided wired cape
4) BvS Battle Damagaed Armored
But they are all great.
When I started out a couple of years ago I figured I would satisfy this itch with just one figure to indulge myself and that would be it, Battle Damaged Armored Batman. Ha!