I'm looking at buying a Lazer Z 52" with 27hp Kohler, or the Lazer Z HP 52" with 23hp Kohler. Will the LHP hold a hill as good as the Lazer Z? Are the Drive wheels the same distance apart on both models? Are there any differences between the two that would affect how well they hold a hill? Is the 23hp enough power for the 52" LHP? Is the LHP as durable as the Lazer Z? I see on the Exmark web page that the LHP 52" deck only has 5 anti-scalp wheels? Did they leave off the wheel located on the front discharge side? Is this an issue? Any opinions between the ultracut deck on the Lazer Z and the trivantage deck on the LHP? Any other thoughts or opinions between the LHP and Lazer Z? Is the Lazer Z worth the additional money (~$700-1000)? I'll be cutting both residential and commercial properties. Thanks in advance for your responses.