Well yah, those are all ratio-tuned codecs that are very slow. LZMA beats bzip2 on both ratio and speed so you might as well forget about bzip2 forever. Zstd,

Well yah, those are all ratio-tuned codecs that are very slow. LZMA beats bzip2 on both ratio and speed so you might as well forget about bzip2 forever. Zstd, snappy, LZ4, or even brotli are probably better choices than zlib for most people. Brotli has LZMA-like ratios at dramatically higher speeds.