I agree with Muleskinner.
I had a 4330, and thought it was plenty. I upgraded to a 5030HSTC, and was shocked at the difference. I pushed back some palmettos with ease. I know the 4330 would have bogged down on it, but the 5030 uprooted the palmettos with little effort! Right after I did that, I had memories of what Muleskinner stated about the 4330 not having enough power. Now I am a firm believer in what Muleskinner stated. I don't know why 7HP makes a BIG difference, but it was enough to make me take notice.
Joe