Is there anywhere in London or East Anglia that I can get a good demo of some in-wall speakers? I'm planning to use Linn Sekrits as my main rear speakers (to complement the Keilidh's and Centrik at the front) but Linn's in-wall speakers are now pretty old, so I think that other companies have better options for my other rooms. I'm probably looking to spend £100-£200 per pair, and I'd love to hear some of the options, but most dealers only seem to have at most one brand installed! Can anyone help? Cheers.