I had an F28A followed by an F280C. Both machines were great to fly although the uncorrolated throttle made an overspeed easy. The big problem with the Enstrom was the maintenence costs. I was told that I could run an H500 for what my Enstrom was costing me.
I then bought an H500C and after 15 years they were right, the costs were about the same and obviously there was no comparison on the performance of the 2 machines.
The Enstrom is a safe crashworthy machine that has no time life limitations, but I think engineering and perfomance wise the R22 and R44 are supierior.