The AS355 is used alot as EMS machines, mainly used as backups now in the UK, primary is usually EC135 or MD902.
I flew the F1/2 for a few months and if I remember it varied between Performance Class 1 and 2, dependant on weight, OAT etc.
Performed well and was happy with it but I believe there was a big step up when the N/NP came out.
TiP