We have 22 HP Kawasaki engines on all four of our Tiger Cats. They have plenty of power. The only Turf Tigers I have run had the Vanguard engines on them. They definitely had plenty of power as well. I am not a fan of Kohler engines period. The old ones were awesome but the new ones don't seem to hold up. I personally have not owned one but I see numerous other people that do have them and most do not have good outcomes over the long haul.