[KaktoR]

depends.

First i manually compress one single big file with freearc m1. If the ratio is good, then i go with srep+lzma.

When srep gives just ~95-99% ratio all the time, i go with none compression.

I don't know if a detector for srep/lzma exists out there.

Example DLC2.bdt
original: 2,86GB
m1: 2,83GB
srep+lzma: 2,82 (100%: 3,072,213,503 -> 3,051,053,436: 99.31%. Cpu 28 mb/s (106.453 sec), real 29 mb/s (99.886 sec) = 107%)

Just 30MB difference. It's just not worth it.