20 in. (Brushless) Steel Deck Walk Behind-Self Propelled, Cordless Mower Kit - 7.5 Ah Battery/Charger Included

The brush-less creates a magnetic field using electronic controllers and magnets (duh) to cause the rotation of the blade. As a result, there is no physical contact between parts and therefore no wearing out of parts to be replaced. As a result, brush-less is 10-15% more efficient with potentially more torque. You will see a little more time between battery recharges and perhaps better cutting. Because there is no contact, there will be a noticeable decrease in sound from the mower. The published weight on HD has the brush-less (with steel deck) being 10 lbs lighter than the poly/plastic deck mowers. This seems counter-intuitive but could be due to the motor being less heavy due to no brushes. The electronic controller parts are fickle during the manufacturing process. Some will be defective coming out of the plant, others will be defective within the 1st 30 days. Typically if there is no defect early on, there is no problem for years. There will be more negative reviews due to this phenomenon. The company will not be able to control who gets a bad electronic controller, so a company's Customer Service quick response and resolution is very important if you are going to buy brush-less motors. It would seem Ego is one of the better CS companies from the reviews I have read with several different brands. Should you get the brush-less and have issues immediately, you may have gotten one of those bad controllers and just need to get it replaced. I wouldn't give up until it occurs 3x after receiving new parts or service. Of course, getting that done within the time frame for returning the mower counts. Brushed motors have a contact between the rotor or stator (not sure) and brush contacts, these brushes create an electrical contact to cause the spinning of the blade, the brushes wear down over time from the spinning. How long before you have to replace the brushes, I don't know. But I haven't read any complaints regarding replacement of brushes, so probably brushes are not the cause of people's disposing of a mower. Brushed motors are louder (unsure of how many decibels - wouldn't db level be a nice stat for those that want to keep their hearing), have less defects (no electronic controllers) coming out of the plant, are slightly less efficient, and may have less torque. Will they handle thick grass, wet grass? All the positive reviews seemed to indicate yes. Perhaps the dual battery mower is the answer to brushed but with more torque. Not sure. Then again, probably more electronic controllers for metering draw from each battery. From my research, it seems that the Brushed motors have wonderful reviews. Time will tell if you will need to replace brushes. I will probably go with the 21" lighter weight brushed mower and save $200, perhaps put that towards another battery. And wear ear protection if needed.

All wheels adjust at the same time, not separately.

I actually prefer the plastic deck since you don't have to worry about rust. As for power, the automatic torque adjustment cuts through the toughest grass without stopping. The brushless motor will last longer (maybe 25 years instead of 20?). Now if they could just improve the blade to actually mulch instead of leaving a bad haircut.

Hello Yardbird! All of our EGO mowers come with higher diameter wheels in the rear. Thank you for your question!