With the recruits from Advanced House Level 9, and Atlantis Rising, it is much easier to run Uncommon ( RT02 ) than Extra fast ( RT19 ).
So getting a second training camp to Level 19 is less important now.
Getting a new training camp to level 11 for Extra low cost is very important.
So I now run:
1x Legendary for food storage
1x Extra low cost for power leveling or game changing heroes. I do not touch unless I get a 5* healer, or similar game changing hero like first Wu Kong/ Rigard/ Proteus/ Melendor/ Boldtusk/ Grimm/ Falcon/ Wilbur/ etc.
1x Extra low cost for daily leveling.
1x switch between Extra low cost, and Uncommon.
Notes
Click for notes
I am temporarily running 3x Legendary training trying to get Cyprian. 1x Legendary training since 2018-Mar. Gem summons since 2017-Sep.