Back in Feb my dealer had a Pro Day. I referred 3 customers that bought mowers that day so as a "thank you" to me my Dealer traded my 1997 48" Exmark Lazer Z HP 420hrs (had brand new 23hp Kohler) for a 60" Lazer Z XP Liquid Cooled (1500 hrs) with a Brand new 23 Kaw and a new deck with mulch kit. This changed everything. What a difference the 23 hp liquid cooled Kaw is from the 23 hp air cooled Kohler. It reduced my bagging by 75%. I have put 50 hrs on it since Feb and have put only 10 hrs on my 2004 Lazer Z. In years past I have had to remove the mulch kit in May but I think this Monster has enough power to go all summer without removing it. I can't help but wonder what those new 27 hp Liquid Cooled run like. Having 2 60" mowers is a lot better that having a 60 & 48 as well.