Those are the two I will probably pick from. Any pros or cons for either you can think of?
They are two top of the line mowers , so they have fewer cons than most . Expense of repairs for them will be steeper than cheaper mowers , for example if you wear out or damage the seat it will cost you around $500 bucks to replace the scag seat . So you can figure that others items are costly but they also break down less and have fewer issues .
Even with a similar size deck I always thought the scag cut a wider swath , and their decks appear to be deeper . The seat on the scag is so comfortable , could sit on it all day . Due to design there may be a rattling noise associated with the scag when the blades are engaged and in operation . Mine has this noise and others on the Internet had the same slightly annoying condition , it may be the springs rattling . It has a bunch of grease zerk locations , not a problem but maintenance feels more manual . This is small nit picky stuff as I loved the machine .
Exmark lazer z is what I own now and it has minimal maintenance as they built it with that in mind . It's comfortable as well and I don't have anything negative to say about it , just haven't had any issues . They're both great machines and it really comes down to feel , be mindful of the motor you choose . Mine has a Kawasaki and checking the oil is different as you aren't suppose to screw the dipstick flush when checking the oil . If you buy one you need to get the hydraulic oil changed at a dealer , if you don't purge properly then you could get air into the pump and cost yourself a thousand bucks . I change my own motor oil , grease zerks , remove and sharpen the blades . Just test ride both .