I bought a 2010 Anthem X4 in the end.
Got a load of goodies to fit to it – some new, some from another bike – XT crankset M770, XT Shadow rear mech, SLX shifters, Formula K18 brakes and rotors, KNC X9L, Thomson seatpost and stem, Next SL carbon bars, Stans Olympic wheelset (weighed at 1500g with Dirty Dan 2.0's run tubeless with Stans yellow tape (light for a mud tyre at 460g) and KCNC ti skewers – just need an XT cassette and I'll be sorted.
I've not weighed it yet but I hoping for around 23lbs – will have to see.