9600_9610 are still a good machine. plus fairly easy to repair and set. You can drop straw and leave a nice windrow and there are enough of them out there you can get a good deal on one. 50 and 60 are still pretty new to most. take abit of getting used to. sts can drop straw, but not as nice as a walker, and ya have to set them alittle different to do a nice job. why give up a good thing if she's still doin the job. that is unless you want new paint and payments haha