I did some searching and couldn't find any information, ideas or opinions on this issue, so I hope you guys can help. I have an eight year old Bad Boy Lightening Z. It's been a trouble free machine, but I have only one issue with it and that is the way the deck doesn't seem to float very well. On flat ground it gives a very nice cut. I mow a 1/4 mile of bar ditch as we call it in Texas, and there just doesn't seem to be anyway to get it to make the bottom of the ditch look nice. I am wondering what kind of difference a mower with the deck suspended by four chains would make, if any difference at all. The Lightening Z has two chains and two leveling links as they call them. This has been a great machine and I hate to start over, but I would like to get something with a bigger deck anyway. Thanks for your comments and sharing your experience.