I've done some searches and haven't found much in the way of reviews on the Kubota Z400 series. I have read everything I could locate on the Z100 series.
My budget is around $6,000 - $6,500 and currently looking at Kubota.
Kubota Z411KW-48 ~$6,000
Kuboa Z121S-48 ~$5,000
Kubota Z125-54...