Excuse my ignorance, but what do you mean by 4mix?
The Stihl 4 mix units are 4 cycle or stroke engine that uses the 2 cycle lubrication. It's basically a 4 stroke engine without the Crankcase. The advantages to the 4 mix are Less emissions, there more fuel efficient than the 2 stroke and there definitely less noisy and weigh less than a conventional 4 stroke.
Ok thanks for the info. Yes I researched push mowers and I think you were right- the snapper seems to be the best one for the money. At least what I need it for. I have a large 3 acre lot. Use my ZTR for most of it. I need something that will mulch really well, I don't really need to bag. The Ninja sounds like the best right now. My lawn is pretty level also. I use my Stihl BR600 to tidy up any clippings.
Ok thanks for the info. Yes I researched push mowers and I think you were right- the snapper seems to be the best one for the money. At least what I need it for. I have a large 3 acre lot. Use my ZTR for most of it. I need something that will mulch really well, I don't really need to bag. The Ninja sounds like the best right now. My lawn is pretty level also. I use my Stihl BR600 to tidy up any clippings.

Honda Lawn Mowers: HRX217VKA, HRX217K4VKAHave to put my two cents in at this point seeing we changed from Stihl products to mowers. Toro mowers are just as good as Honda's and Snappers. I think they mulch better, personal pace is easier to use and repair costs if needed are cheaper. I'm 6'-4" and last year I bought and Echo trimmer Model SRM-266S which has a long shaft and works great for us height challenged guys.
Are you buying a New Snapper ninja because for that money I'd look at the Honda HRX217VKA. There the best Mulching mower on the Market $599 New with a 5 year Warranty. JMO
Honda HRX2172VKA 21" Self Propelled Mower w/ SmartDrive WiseSales.com
I would like to see a 4mix chainsaw...that crap will never sell.. haha