I`d be very interested to learn how you get on with this and what you decide to go for.
I use the M&K S150`s for LCR but I`m looking at how I can upgrade from those, something that can provide the huge dynamics we expect.
I already use 5 QSC amps in my system and know how superb they are, I couldn`t demo them anywhere so took a gamble and ordered them online !
I`m also very interested in the QSC SC-1120, I think that new Reference model could be out of reach and I think it needs to be tri-amped as well ?
The only horn-loaded speakers I`ve heard was a Pro Audio Technology system and that was truly amazing, but with a price tag to match.
If I can find a speaker that performs anywhere near that level but at a decent cost, that`s my intention.
I`m in the UK as well, can I ask you where you got your prices from for the QSC system - have you any links at all ?