Getting the right ZTR for your lawn is a lot more complicated than just this and in every brand there are good models & not so good models and some are just plain useless ( MTD & Husqvarna + all of their other brands )
So if you want good advise you need to provide us with good information
1) the topography of your plot
2) how regularly you mow
3) what type of grass
4) how tall you like to cut it
5) the EXACT models under consideraton
6) your level of mechanical aptitude
7) Bag, Throw or mulch
8) climate snows ? long dry summers or winters ? 10 or more 100+ days heavy frosts heavy dew
Once upon a time a now extinct species called a mower sales person would ask you these questions then make a suggestion
Now days they either point you towards what has the biggest profit or at a mower that has run out of free credit time & they need to pay the factory for it right now