The only thing going for the Seplos BMS is communication, but Andy is unsure how good that is. This is version one and will improve in the future, maybe they also come out with a better balancing solution on the BMS. The inability to shut down the battery is a concern. It does look very neat, better than many prebuilt rack batteries. For a beginner it looks almost fool proof to build. I liked the inbuilt 400A fuse, but wonder about its quality. T-fuses are not cheap. I had a quote from Luyuan for their case delivered DDP to UK, about $370 with everything h you need except BMS. A 200A JK BMS was recommended at $133. Total $500, $120 less than Seplos. Positives about the Luyuan case are external breaker and JK BMS. Negatives more chance for a beginner to confuse themselves connecting balance leads or BMS, no communication. The compression looks better in the Seplos, but Andy may be right about the rubber and cooling. I am now leaning towards the Luyuan case with a JK BMS.