Just so that we are clear, yes both tractors are about the same weight, with or without an equal amount of ballast. But if and when the tractor is ballasted, the L3800 handles the additional weight much better because of the extra HP.If there's any doubt, go bigger if cost is no issue. I was sure the B7500 was the biggest tractor I'd ever want when I bought it in '02. The following 10 years changed my mind.
I'm really happy with the L3200 because it does much more than the B7500 it replaced. The 32 horses of the L3200 rpresents a 150% increase over the B7500.
The difference between the L3200 and L3800 is roughly 50 pounds in weight. Top speed of the L3800 is roughly 1/2 MPH slower. The L3800 was around $1,800 more than the L3200 where I bought my last tractor.