RE: Another "Whats the best" engine thread
All of those should be OK?
Some of those are more expensive originally than others like for example the Echo
Homelite 25 and 30's have been favorites for years.
The cheapest engine in that list is the Ryobi yet there been hundreds of them converted and the owners are happy.
Be sure and get one that is in good shape mechanically for the part you are going to use.