I'm home owner with a small lot (<1 acre) so my lawn equipment needs are strictly consumer grade.  As such I am drawn to the big box stores for my purchase acquisitions.  I don't purchase extended warranties because I have always had good luck with trouble free products.  The one time that I did have a defective product, the BBS (Kmart) gave me a full refund even though the product was 3 years old. 
I find myself drawn to the new evolving electric technology.  I have owned hybrid, electric hybrid, and full electric autos.  I recently came across a Ryobi full electric riding mower at Home Depot.  It's more compact than a conventional tractor and is go kart-ish in appearance.  Price wise its seems a little steep.  But a high price point is normally associated with any evolving technology.
http://www.homedepot.com/p/Ryobi-RM480e-38-in-Battery-Electric-Riding-Lawn-Mower-RY48110/300246266
I want this.  Just waiting for my 23 year old Poulan tractor to die.