Ok, so I managed a circuit of the red on Sunday morning.
I left with mixed feelings - I really enjoyed a few sections but a lot of the steeper descents were badly cut up. It did seem like a bit of a slog towards the end, but that's no bad thing if you're looking for a good workout.
I don't ride a lot of trail centres so my only real point of reference is Swinley, I'd say the Swinley guys have made much better use of terrain which has much less potential - they've got far less altitude to play with but you always feel like there's a fun bit just around the next corner. At Dalby some of the fire road links seemed endless.
Also £7 to park is taking the piss a bit when I can ride 4 hours at Swinley for £2.
I was there early and crossed over with the same 2 or 3 groups/ riders at various points - all were friendly & they were mostly locals who rode there frequently. The only guy I met who was a Dalby virgin like me, also commented how rough some sections were.
Overall, glad I went and I'll probably go back if the opportunity arises but I wouldn't go too far out my way for it.
One wierd thing - when I synced my strava time at the end of the run it showed a total elevation gain of 4,250-ish feet. Looking at it now, it shows just over 2,000 ft. What's happened there then??