I'll very likely be going. Hope to spend some time with Neat, Monitor Audio, Naim, Cyrus, Roksan, KEF, PMC, Spendor and Guru (I'm exhausted just thinking about it). Although based on my last experience a couple of years ago, each room tended to be playing one thing throughout the day (whatever they were promoting the most that year, usually their latest release) with some very dubious and evidently hastily-prepared playlists!
However, it can draw you to things you wouldn't otherwise have considered; I remember being particularly impressed with Neat Iotas and Spendors last time, and it can repell you from things you were previously seriously considering (Audiolab - torture, Grado headphones - nasty despite all the rave reviews; but I completely accept some people have bought these products and have been very satisfied with them - just not me...ever!!), so even if you don't get everything you would have hoped out of the show, it's still a worthwhile process.