Does $8700 for a new Huslter Super Z, 30 Kohler hp, 66" deck with flex forks sound like a good price.....? Does $8800 for the same combo except a 72" deck sound as good..? My mowers have been 60" or less. Except for the obvious reason of cutting more ground with each pass what are the positives and negatives for each scanerio? Also I've notice the blades (fusion) for the 72" cost quite a bit more than the 66". Do you have an opinion on after market blades and the results of using them?