If you want to stay in the $3.5 to $4K range, you can look to a Hustler Sport with a 48" or 54" deck and I would take the Kawasaki FR651 engine option. http://www.hustlerturf.com/products/sport.html I would say the same with the BadBoy MZ series. Available in a 42" or 48" deck and also has the Kawasaki FR651 option. http://www.badboymowers.com/view/2012-mz-series Both of these mowers will do what you need them to do for what you have and the price you want to spend. Think of these models like a truck, you want the bigger more equipped F350 Diesel King Ranch, but for now the XL F150 will do the job till you upgrade These two models have been very popular with forum members over the past two years or so. Many, many happy owners!