I have a 150 ft long driveway in SNOW country . My first Ariens a 7hp last 32 years ans i sold it in ONE hr vand bought a 2008 Ariens 9 hp 2 stage w/27 in cut last Xmas for a grand ----awesome beast !!!!
In agreement with Warp Daddy & others who push a 9+ hp machine. My 5hp runs fine and was on sale(online), but there's always some heavy/wet accumulation at some time in the winter that needs a strong motor to spill the junk out and away...
$.01
I bought a 10 hp Ariens that was used 1 season. I LOVE the thing. Our driveway isn't too long but it is really wide. Having the power to throw that snow is priceless.