you can set a lot of methods with freearc.
this is my test methods
Code:
-msrep+exe+delta+lzmh:d26
-msrep+exe+delta+rar
-msrep+dispack070:659032536b+delta:750mb+bcj2:125d+lzma:1024mb:mfbt4:1024:mc1000
-msrep+exe+delta+7z
-msrep+exe+delta+packet
-msrep+exe+delta+plzma
-msrep+exe+delta+rzm
-msrep+exe+delta+lzma:1024m:ultra:158m:mc1000
-msrep+exe+delta+lzma:a1:mfbt4:d158m:fb273:mc1000000000:lc8
-mprecomp+srep+exe+delta+lzma:a1:mfbt4:d158m:fb273:mc1000000000:lc8
-msrep+exe+delta+zpaq
You need to test the methods and check arc.ini.