MC4 -> Best drop rate for Evos (IMO)
MC5 -> Cores, and tons of cores. with slight drop rates of evos / gizu boss (again chances of evos)
MC6-> dont bother this, unless ur of level 80 and above with a party of friends.
Just to add on, i remember hearing a rumour saying
MTQE =25% chances of evo
MME= 50% chances of evo
Just saying, aint confirming the rumour. U may wanna take it as a pinch of salt, or try ur luck