cakefacesmallblock: I certainly found that the Gyro gave me a bit "more confidence at pace on the downs or techie stuff" than my 26" Trance. However, I expect that a similar boost in confidence could be gained by sticking a 140mm fork on the Trance (as may people do). The result would be lighter and easier to hop around on that the 29er too, no doubt. Personally I think the bigger wheeled Gyro probably does give a slightly better overall package for the type of riding I do than a Trance at 140mm. But the differences are subtle and it's still only a "probably". Change the terrain or type of riding slightly and things could easily swing the other way.
The bottom line, I think, is that there is nothing revolutionary about 29ers. They are just bikes. It still takes effort to ride them up hills and skills to ride them down. But they do give a slightly different set of compromises that may suit some people (including me) better. If you are planning on buying a new bike anyway then you'd be daft not to at least consider one, but I don't see a big enough difference to make it worth dumping a bike that you are happy with.
deejayen: There is a Gyro in Highland Bikes in Inverness (at least there was on Monday). It's just on the right as you go in the door. A size large, Pro spec with upgraded rear shock, I think. Luckily for me it's in a silver (raw?) finish. If it were in on of Orange's more lurid colours then it would probably be hanging in my shed now.
I've stripped the old (2006) Orange Five down with a view to sticking the bits on ebay. I haven't really made a decision on whether to sell the 26" Trance yet. But if you (or anybody else) is interested in a 2012 Trance X2 in size Large then drop me a line. I guess it would make my mind up for me