Do you always bite the heads off newbies? How patronising!
I think that was a bit unfair. Peter's responses are always very balanced and biased towards safety.
For whichever type, get an INDEPEDENT engineer to review and assess the machine prior to contract.
There are not so many Enstroms in the UK, certainly compared to R22/ R44. There must be a reason for there being so many R44 machines compared to the Enstrom piston machines (take the turbines out of the equation for now for simplicity).
Worth looking at the relative maintenance costs and revenue potential if looking to see time as well. If few people have them them less likely to find high hours (safe) pilots to fly them and less maintenance operations to service them.