I use QNBBM-8S Active Balancers on my 5 production packs. 3x 24V/280AH & 2x 175AH. I also use Chargery BMS8T-300's with Passive Balancing only ON during Charge (above 3.30V). This combo works very well for me. The 280's are a Mix of Bulk & Grade-A Fully Matched & Batched. The 175's come from a recovered ShunBin Prebuilt, they are used EV Grade LFP (troublesome cells too).
My Utility packs use JK-BMS' with Heltec Active Balancers, Grade-A Matched & Batched 105AH cells.
No issues with the Heltec Balancers either.
LINKS:
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deligreen.en.alibaba.com
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cncdheltec.en.alibaba.com
Hope that helps, Good Luck.