Barry I watched an Electra at California jets on 16s and it was still very quite... compared to my f-16 with the DS-94 and Tams A-4 with early proto type of the TJ 100
One thing I did notice was with it being so quite it didn't seem as fast...
It was fast and it had the best vertical I've seen an EDF have.. he also flew for 7:00 minutes (I used a timer on every EDF I watched that day) which I've never seen any fan do with my own eyes
But with the lack of sound it was deceiving... he got best EDF at the show
Another option could be the E-Turbax I watched one the same day and it sounded great... good price too...
I believe in WW fan test it had more power than all the fans
IMHO, turbine-sounding EDFs are the future in big scale EDFs