How many hours does it have?
I must admit, I love the Exmarks and I actually own an older model. It only has 400 hours, but I have had to do a lot of work to it since it was abused before I got it.
I just bought a used Husqvarna PZT48 with 175 hours. For the price it was a no brainer vs an Exmark. I just replaced the used up gator blades with stock blades which I would imagine are about the same blades that would go on your mower. The stock blades are nearly the thickness of the Exmarks, but they are a little beefier than what would go on a cheaper mower. The stock blades have been awesome! I realize they may not last as long, but the cut is unbelievable. It cuts everything first pass; even wet grass.