Not sure what the benefit is of big dogs and having 2 sets of dogs? I tend to prefer shorter bars. I have a 372oe/365OE hybrid and usually a 20" bar. I use the smaller single 365 dogs, and realized I lose 1.5 inches of bar. I measured my 385/390 hybrid and noticed I lose 3 inches of bar! What's the benefit of going big ( other than impressing the chicks and ducklings?)