I have never felt that I needed more power for the Snow Blower, However In the summer I use a 60" mower and a TracVac To pick up the grass ( I have some Hills) The trailer is 4 feet by 6 feet and 4 foot tall. When it get near full I sometime wish I had gotten the 4400. I started with a 4200 and it did lack power. I think the price from my dealer was $1200 more for the 3 HP of the 4400. I'm not sure it would make a difference after reading the experts on Torque, as I run at 2600 RPMs. <font color="red"> </font> . I think you will be happy with the 4310, but you will always think Maybe I should have.
If it were today I would but the 4410. /forums/images/graemlins/laugh.gif
Good Luck
DPR