Map building services

Do any of you use any of the bigger custom map building services out there? (clash champs, etc) have one you really like? Are you getting anything unique or are you running into the same base you're using grinding through legends? Are they already posting maps built on the update this week?

I basically run 3 or 4 bases and just tweak them as I find them being hit a certain way over and over or I'll grab a base that I have issues with in legends and I'll build it to either learn how to hit it or I'll run it.