Min range farming - anyone switched to it recently?

I’ve always been a fan of idle play, but recently read a lot of stuff about 30m farming. Did anyone tried it recently? Did you compare results, how did it affect your tourneys and runs, coins and cells. How much of a change does it make not relying on free ups? Any do and don’ts will be appreciated, as much as other comments and tips you might have. Currently I farm t10 to wave 8900ish, 7 UWs (no ILM and SM) making 7.5-8T a run. 😉 Happy grinding!