Well I have a kawasaki 15f for sale Brand new and does around 61mph stock and also a Kawasaki ultra 250x with a stage 1 but if you are importing it yourself there is a wonderful bike yamaha just realeased called a vxr but it might break the budget.
yup its a 2011 model this is going to be its first year of production..........Its n/a and is fast enought o run with supercharged ski's but it wont handle as well in the chop cause it is much lighter. But there is absolutely no bells and whistles on this ski just the basics..........http://www.yamaha-motor.com/waverunner/products/modelhome/650/home.aspx but what you should do is a wait a year or so till the price drops when the 2012 models are released.
I have 2 yamaha VX deluxe with trailers, 2005 models with 54 and 94 hours they are practically brand new and they would both cost you a little over the price you plan to pay for one. These machines sit very well in our choppy waters. call me or check my add for soempics 682-7504