Helitech at both Redhill and Duxford were great fun. Easy to find people after hours, as a significant number stayed locally. The last one in London was a waste of time and an awful, remote, location. Amsterdam was a waste of time and money.
I won't be attending any of them in their current format and locations, as they simply don't appeal to the vast majority of Operators and Service providers, which is actully the prime reason for attending! If I want to meet any European helicopter operators then go to the States/Canada or wherever else they are located and visit their headquarters. If you want to meet their people, then go to HAI.
But then to be totally fair, I'm afraid I'm not going to Louisville either.