Walker has a niche in the market. Just not in my market. LOL I see a few here and there but that's it. I can't stand the 3rd wheel stripe it leaves. Yes you can get a optional double wheel kit that cuts down on the hideous single wheel mark it leaves but you'll have to spend even more money.
Someone mentioned it saves time allowing you to get into tighter areas. Well as slow as they are, the time you're saving on the trimming side doesn't compare to the time you'd save with a quicker mower on the open areas. Even with the speed up kit it's pig slow. There's a reason why it can only go so fast and they don't want it going faster.