Pj, I need help deciding between the 42" vs. 48" Super Duty. If the 6" difference in deck size is not an overriding factor then which one would you say is a better machine for the money (design, cost...) My understanding is the 42" is actually a mini z renamed vs. the actual super duty line that was released last year. So are there differences in the deck and overall design of these machines? Gator and Wavy mulching blades are listed as accessories for the 48 but not the 42, does that mean they can not be used on the 42. Are there other differences? Also, I'm hearing that prices on commercial machines are going up after the promo ends this month, since these (Fastrak & Super Duty) are grouped as residential on your website, will their prices be affected as well? By the way, will be mowing about 0.75 acre/week, level lot. Would also like to hear from owners of either units as well, pros. and cons., what you like and dislike. Thanks in advance.