Don't get me wrong, Claymore produces some great miners and has superb support, but sgminer-gm-5.5.5 runs faster, draws less power and has no fee.
https://github.com/genesismining/sgminer-gm/releases

v9.1:

- additional range checks in code for better stability.
- reduced devfee, it's 2% now (72sec instead of 90sec) if you use secure SSL/TLS connection, currently Flypool and Suprnova pools support encrypted connections, see Readme for samples.
- improved "-di detect" option: now after GPU order detection miner starts mining with the detected order.
- added ability to use environment variables in "epools.txt" and "config.txt" files. For example, define "WORKER" environment varibale and use it as "%WORKER%" in config.txt.