I am considering the purchase of an Exmark Navigator with the 27 Kohler and 42" deck. Being that the grass gets quite thick down here in the south, I like the depth of Exmark's UltraCut mowing deck. From what I am hearing, this machine is a real beast in the St. Augustine grass too. The only question that I have is - does Exmark offer this machine the accessories to enable mulching - as the Walker mowers do? Is the machine designed to bypass the Grass Handling System somehow and just simply mulch? If not, then I am going with Walker Mowers 100% It's too bad that the Exmark FrontRunner isn't available in more deck configurations. I could see that machine in 44" and 48" deck options doing quite well.