I have owned gas mowers and snowblowers all my life and have decided to do my little part to save the planet. I just sold my gas snowblower and lawn mower and I am going to go electric. After much research I think I am going to buy the EGO products. The reviews on both the 56V 5Ah snowblower and mower are very good but I have one concern and one question. There are some negative comments regarding the mulching capabilities of the 21" mower and in a couple comments they said the 20" mower was better. Is it true the 20" mower mulches better and why is the 20" push mower more expensive than the 21" push mower? I'm looking on Home Depot Canada on line. Thanks.