Hello guys!

Im thinking of switching out my old bike for a newer one. I have done some research and visited some bike stores, but cant decide wich one to select.
If this makes any difference, im more of a technical woods rides rather then flat/wide open. Im 175cm(5.9") tall, and weigh about 61kg(134 lbs).
There are 3 choices for me. (Spec list will be below)
1.) Brand new 29er, Merida Big Nine Lite 3000, 2012 version. Special price for me 1400€
2.) Used Fuji Tahoe, repainted, with crack in frame. 2 years old. 1100€.
3.) Minimally used Fuji SLM 1.0 26". 1300€

Now the spec list for bikes.

1.) Merida Big Nine Lite 3000 2012 12.9kg
Frame: Aluminium
FORK: Fox F32 Fit 29er RLC 100 Taper 15mm
DERAILLEUR REAR: Shimano Deore XT-10
SHIFTERS: Shimano Deore XT Rapidfire
BRAKES: Shimano Deore XT-Fin
CHAINWHEEL: Shimano Deore XT 42-32-24
CHAIN: Shimano CN-HG74
HUBS: Shimano Deore XT-15 mm / XT-12 mm
RIMS: XCD Lite Big29 D
FREEWHEEL: Shimano CS-HG81-10 11-36
TIRES : Schwalbe Racing Ralph Evo 29 2.25 Fold
HANDLEBAR: FSA Afterburner Flat 670
SADDLE: Selle Italia SL XC M
PEDALS: Shimano M520

2.) Fuji Tahoe
Frame: Aluminium
Fork- Rock Shox Reba 29 RL Dual Air
Front Brake - Avid Elixir 5S, 180 mm
Rear Brake - Avid Elixir 5S, 140 mm
Wheels - DT Swiss XR39 Disc, 32H
Hubs- DT Swiss XR39 Disc IT
Tires - Shwalbe Racing Ralph
Bar - Scott Hot Rod Tbar OS 31.8mm
Stem - Scott Comp, Oversize 31.8mm, 1 1/8“, -6° angle, 80mm, UUS
Seatpost - Scott RC 05
Saddle - Selle Italia Team Edition
Cranks - Shimano XT
Rear Der. - Shimano XT
Front Der. - Shimano SLX
Chain - Shimano CN-HG54
Shifters - Shimano SLX
Pedals - Shimano M520

Most of parts are actually brand new.

3.) Fuji SLM 1.0 26" 8.5kg
Frame: Carbon "M" ( 173-185cm)
Fork : Trigon Full Carbon
Handlebar: Truvativ Stylo WC
Stem: Truvativ Stylo WC
Front Der. Sram X0
Rear Der: Sram X0
Shifters: Sram X0
Cranks: Sram X0 2x10
Chain : Shimano XT HG94
Cassett : Shimano XT M771
Pedals : Exustar Titan Axle
Brakes: Avid Elixir CR ( 2 X 160mm )
Bottle cage: Carbon
Wheelset: Mavic Crossmax SLR
Tires: Schwalbe Furious Fred (2.25)
Saddle: Prologo
Saddlepost: Integrated with frame, carbon

Id be very thankful for any kinds of answer, suggestions. Really need them to make up my mind.