Without wanting to start the old thread about single engine IFR again there is another difference between the systems:
Maybe I am wrong here but I seem to recall a friend of mine saying that he has an FAA instrument rating which was done on a Robinson R22?
I have done my JAA IR in the UK not so long ago and have since been flying the North Sea in a Puma. If the above statement is true I wonder how much value such an instrument rating has for real IMC flying. I mean how can you gain an IR without ever been in actual IMC conditions. I have seen a number of guys doing fine during there training with screens and foggles but becoming very disorientated in cloud. And doing an ILS down to minima with a poor RVR is another story altogether. Especially in a single pilot environment. Makes me think.
If I am wrong please correct me .....
Woolf