I agree with Deere Dude.
When I bought my first JD425, I didn't "need" it as the JD212 was in good working condition and kept in good shape.
But looking back, I found I could cut lawn in 2-3 hours, instead of 8 hrs. I could add a leaf collector and could stop raking leaves and dragging them off on a tarp. I could mow hillsides that were near impossible before. I could do so many more things with more ease than before and the 425 was so much more fun to drive.
Same happened when I moved from a 2-cyl JD 420 to the JD 4300 with FEL. That opened up a whole new era for me, and so glad I made the move.