Exact opposite for me. The fx921v was our last Kawi. Loud, gas hogging, oil burning, backfiring pos. Kohler has always given us 2500+ hour service life with minimal problems. The efi rocks so far. I would have normally used a half tank doing our Monday lawns but today I used just a little more than a quarter tank! The engine is so quiet you can't hear it over the deck noise. I got rid of the first 460 because of the engine and nothing else. Granted I did want the new deck but I wouldn't have gotten rid of it just to get a different deck. I know most people think opposite of us but we have had no luck with Kawi over the years.