I'm in the middle of doing spring aerations on bermuda grass, and am all ready looking ahead to the fall. I would like to here from those that own the Lawnair 28. Is it worth the money? How well does it do on inclines? I currently am using a Ryan IV and have used a Ryan V in the past. I'm considering refocusing my business in 2001 to doing mwing 3 days a week and aeration 3 days--12 weeks in the spring and 10 weeks in the fall. All residential lawns. With this in mind is it worth the $4500 for the Lawnair 28? or should I buy a Ryan V for $2500? Thanks in advance.