You have your trail centre bikes and your normal trail countryside bikes.
Most countryside trails can be ridden on a cyclocross bike without the need for huge suspension travel. The image trail centres seem to portray (along with some magazines) is engine-less motocross style of big air, big jumps and big gaps. Personally I'm not the adrenaline junky that can do that, I prefer the challenge of big hills and getting from one place to another. I laugh at the bikes I see around Thetford - its one of the flattest places to ride yet now full of S-Works and Audis.
I think what I am trying to get across is dont get caught up in the hype and just enjoy the ride - not the monetized marketing driven bullshit that greets on opening page one of MBR...