I was very interested in a Leonardi wheel. I tried to buy one. I called multiple times, sent emails. After a few weeks I called and spoke to a manager there. He said he was going into a meeting and would call me back. He never did and I finally gave up.
I saw the greenteeth wheel at TCIA. It is not available for larger machines yet. I think they said it must be less than 40 HP?
I bought a second machine last year. Both machines are are Carlton 7015s. The new one had the sandvik wheel. I was very skeptical of the wheel. There are so many teeth and I envisioned huge replacement costs. This wheel has been unbelievably good. We did a city contract with over 150 removals in the curb lawn and went through less than 10 teeth. The wheel also keeps the chips very close to the stump. It speeds up clean up time significantly... Really have nothing to say but positives and I really didn't think I would like it!