Good morning, everybody. I am new here but have been reading the many posts and learned a lot. I am looking for a mower for my own home, which is about 5 acres of quite flat grass and a handful of obstacles. I am a little overwhelmed with the options, but think I've figured out that I need a zero turn and the larger the deck the better. Right now we have a Toro Timecutter with a 42" deck, which was fine for our old house and lawn, but take about 3 hours with our new lawn. With a young family time is a huge consideration. I was looking at the Gravely ZT HD mowers and it looks like the 991084 and 991091 are the same mower (60" deck, etc) for the same money but the 991084 has a 24 HP Kawaski and the 991091 has a 27 HP Courage Pro. My gut says to go with the Kawaski but I'd be interested to hear other opinions. I'd also be open to hearing other suggestions from people if this is not the right mower for my situation.