Muldrake
We use square Sonys at the NATS college at Bournemouth on our APR and ACC sims, [the same ones that Bex is bothered with] and have done for 8 years now, with no flicker problem. However we, unlike LACC, are still using a near black radar background, with only CAS boundaries displayed as radar maps. Thus there is little actually being drawn on the screen to flicker. The LACC screens use a grey on grey display, which being a lot lighter, will reveal any flicker due to the refresh rate far more markedly than ours. Which is why Bex can see the flicker, and we can't.
The Barco displays Bex is referring to are the same size and shape as the Sonys [not the crappy 36" ones you have, and I suspect some of the other units in this thread have as well]. They are TFT LCD displays though, and thus only about 10cm thick. We have some of these under test at Hurn at the moment. They are much sharper than the Sony, but I personally don't like gazing at them for too long either.
Procedural service anyone?