Actually I am using Claymore's ETH miner in single mode. This night I tested ethminer 0.13 and found that it outperforms Claymore's one a little bit (even not counting the devfee). But I like to monitor it via API using own tools. I surprisingly found that latest ethminer is compatible for miner_getstat1 API call, but it requires CUDA 9. Older version for CUDA 8 works well, but it does not yet provide the same telemetry. That's the reason I want to upgrade. Newer version also works in OpenCL mode but hashrates are much lower than in CUDA mode.