I use a QC15 with a uflymic, and it works great.
After using the Telex ANR 850 for a few years I changed to the UFlyMike with QC-15 after a colleague let me try it. It's brilliant - especially when positioning. I can listent o my stereo and hardly hear any of the annoying PAs!
I bought mine from the USA but it's now available from a UK supplier.
www.uflymike.co.uk