I got the HD round back for my 5030. (it only cost me $262 more over the light bucket). Also, be sure to get the quick attach variety of HD bucket($17 more). The QA feature cost me ($270). I don't plan on taking off my bucket either. But, I may want some forks in a few months. I've had friends tell me they are awesome.
The bucket you buy will be of the QA variety or fixed but NOT both. It you decided to get a QA later, and you got the fixed model now, you will be forced to buy a new bucket for the QA feature.
I love my 5030 and the HD bucket. I picked the tractor up last Wednesday and started pushing over 6 - 8 inch trees a few days ago. I was also a bad boy by wrapping a chain around the bucket to yank them around on the ground (manual says don't do this). When I was through, paranoia set in. I could see a slight bend in the top bucket. My brother said ... nah. When I got home I put a roofing square on it. I can tell you that bucket didn't bend a micron! It was dead flat. I've since beefed up my draw bar for towing and pulling activity.
You will be VERY happy with the HD bucket. The QA can be debated but get the HD bucket.