Hi Mark...
I've just done the rounds on buying a boom, as my last indestructable alloy wave boom destructed 4 mths out of warranty!
It snapped between the clamp and the boom arm, on the piece of tubing that runs from clamp to the boom arms! On closer inspection the metal was like butter...a bit poor for a boom 16mths old used about 30 - 50 times!?!?
This kind of snap happens all the time to me, probably coz of my style and the sh1tty metal they use in the clamps, so I'm swithching to one piece i think they're called monocoque.
Lot of carbon booms availavle in monocoque.... But the only two i know of, in alloy, are Aeron and NPX3.
Just picked up the Aeron one a fair bit cheaper than your chinook..it's super light, (could be a worry),decent clamp with inbuilt skinny thingo, quite stiff and has the new style rounded head.
I checked out the full ergal Technolimitz at Albertos, if I had the $$$ I would have gone this for sure. Hand made with top quality components...even the pulley system on the outhaul blew me away (it doesn't take much!!haha)...I'm fairly sure this is Albertos boom of choice too...
Good hunting