76.5 is closer to 80 than 70. the models are close in weight and dimensionally so I myself compare them but something doesn't seem fair comparing a 70.7 cc 372 to a 79cc 7900/7910
From what I hear talking stock if anything under 80cc counts cutting speed/power wise the 7900 is king, in second place the oe 372 and after a certain bar length the 461 will probably outcut the oe 372
taking into account weight, smoothness, air filtration system, power, and cost I went with a 372 and would again if I had to keep it stock
woods ported a solo 665 with 7910 is what Id pick