Hello, My 12 year old lawn tractor is just about dead. My property is about 4 acres of fairly thick grass and yes it takes forever to mow with a lawn tractor. Gravely is having a 20% off sale from now to some time in October. My local dealer has a Proturn 60 with a 25HP Briggs Commercial turf engine for $5360 and one with a 24HP Kawasaki FS730 for $5799. Is the FS series Kawasaki worth $400 more than the BS Commercial Turf? Is the Proturn 60 a decent mower? I can't afford to spend much more at the moment.