As a brand new 48 owner, who has spent several hours on it in just a few days I can tell you that it is a very impressive unit. I am using it on a 4410, so we're not talking about a huge difference in power supplied to the hoe. Personally I think you will love it. I know I sure do.
What is most impressive is attaching and detaching the hoe from the tractor. It is just about the easiest implement to work with that I have ever seen. I can do it in about 3 minutes by myself with no tools and not a single grunt. For this reason, I wouldn't even think about looking at any other brand...this is JD designed to work with JD. Maybe someone else has something as good, but in browsing some of the other forums, I don't think so. /forums/images/graemlins/tongue.gif It takes longer to take the three point hitch arms off than it does to put the hoe on.
I have been doing some trenches around our place. First burying a line for a security system out to the barn. Then I extended all of our downspouts around the house out 35 feet, with perforated ADS pipe. And, today I did some foundation work for an addition to my barn. In all of those projects, I have encountered several coffee table sized rocks at depths up to 24 inches. The 4410/48 has been up to the task in every case -- absolutely amazing.