Bloomin' 'eck, I didn't even go that hi-tech!
I fly a Schweizer, not a Robinson and want to be able to grip the cyclic with my knees (should I ever need to) and therefore, at 5'5" require a cushion to push me forward in the seat. The pedals were not an issue.
I bought one in the sale in John Lewis for .... hmmm.... about a fiver! But I did make sure that it matched the upholstery of the helicopter; you wouldn't expect anything less of me would you?
Cheers
Whirls