Terry at Exmark, I was wondering if you can help me out? I have a 2004 Lazer Z Model LZ27KC60. My first question is what is the model number for the best Flanged Baffle Kit for this type of machine, also can it be used all year round? Second, Im debating wether to purchase a QDS collection system or a third party Bluebird (V190Z). It seems that the Bluebird with a 6hp Kohler would have more power than the belt system on the QDS. Is this true? Also, Does this QDS drop the tip speed or engine performance (RPM), when it is attached to the deck?