Hi , I am new to this great forum First up I need some help, After cycling with a begginner bike for sometime now I will be upgrading this weekend. Please provide some advice and feedback. Here are a few bikes I am taking into consideration. Hope the info makes sense I copied from websites. 1) 2012 TREK 4500 DISC 21" R4999.95 Colors Matte Metallic Black Gloss Metallic Black/Gloss Signature Green Frame Alpha Gold Aluminum w/semi-integrated head tube, formed down tube w/integrated gusset, formed top tube, monostay seatstay, forged dropouts w/rack & fender mounts, replaceable derailleur hanger Front suspension SR Suntour XCM w/30mm stanchions, coil spring & preload, hydraulic lockout, 100mm travel Sizes 21" Wheels Shimano RM35 alloy center lock hubs; Bontrager AT-850 disc 32-hole rims Tires Bontrager XR2, wire bead, 26x2.1" Shifters Shimano Alivio M430, 9 speed Front derailleur Shimano Acera Rear derailleur Shimano Deore M591 Crank Shimano Alivio M4308, 44/32/22 Cassette Shimano HG20-9 11-34, 9 speed Pedals Wellgo alloy platform Saddle Bontrager Evoke 1 Seatpost Bontrager SSR, 31.6mm, 20mm offset Handlebar Bontrager Low Riser, 31.8mm, 15mm rise, 9 degree sweep Stem Bontrager Race Lite, 31.8mm Headset 1-1/8" threadless, semi-integrated, semi-cartridge bearings Brakeset Shimano M446 hydraulic disc brakes Grips Bontrager SSR 2) Fuji Addy 2.0 2012 R 5499 SIZES XS (13"), S (15"), S/M (17"), M (19") COLOR(S) White/Red MAIN FRAME A2-SL alloy w/ PowerCurve down tube, tri-shaped top tube, oversized seat tube and semi-integrated head tube, double water bottle mounts REAR TRIANGLE A2-SL alloy w/ S-bend stay, cold forged dropout w/ CNC'D disc mount and replaceable hanger FORK Suntour XCM w/ mechanical lockout, 100mm travel REAR SHOCK N/A CRANKSET Shimano Acera, 22/32/44T BOTTOM BRACKET Sealed cartridge bearing PEDALS Wellgo w/ steel cage, toe clips and straps FRONT DERAILLEUR Shimano Alivio, 34.9mm REAR DERAILLEUR Shimano Deore SGS direct mount, 9-speed SHIFTERS Shimano Alivio Rapid Fire, 27-speed CASSETTE Shimano HG20, 11-34T 9-speed CHAIN KMC, 9-speed WHEELSET Fuji custom 32H mountain disc hubs w/ Alex DP17 double wall rims TIRES Hutchinson Toro 26x2.15 or Kenda 837F/848R ATB, 26x2.1" wire bead BRAKE SET Tektro Draco hydraulic disc, 160/180mm rotors BRAKE LEVERS Tektro Draco hydraulic HEADSET Oval 1 1/8" semi-integrated, 30mm spacers HANDLEBAR Oval M200R low riser, 31.8mm STEM Oval M200 alloy reverse bolt technology, 31.8mm TAPE/GRIP Fuji dual density kraton SADDLE Fuji women's mountain-sport w/ steel rail SEAT POST Oval M200, 31.6x350mm WEIGHT 14.06 / 31.00 3)Axis A60 R3999.95 Frame - AXIS™ LIGHTWEIGHT, FORMED ALLOY FRAME. DISK SPECIFIC Fork - SR SUNTOUR XCM V3 COIL WITH REMOTE LOCKOUT Headset - VP DROP IN/ PRESS FIT Stem - AXIS™ ALLOY COMP OS Handlebar - AXIS™ ALLOY COMP RIZER 31.8/700 grips - VELO MTB Seatpost - AXIS™ ALLOY COMP 31.6 Seatclamp - PROMAX Saddle - AXIS™ COMP Brakes - SHIMANO BRM-445 HYDRALUIC DISK Shift Lever left - SHIMANO ALIVEO TRIPLE Shift Lever right - SHIMANO ALIVEO 9 SPEED Front Derailleur - SHIMANO ALTUS Rear Derailleur - SHIMANO SLX Crankset - TRUVATIV 3 X 44-32-22 BB - TRUVATIV Pedals - WELLGO STEEL CAGE Cassette - SHIMANO HG20 - 9 SPEED 11-30T Chain - KMC Z-99 Hub front - AXIS™ DISK QR Hub rear - AXIS™ DISK QR Rims - AXIS™ DOUBLE WALL ALLOY Spokes - STAINLESS STEEL Nipples - BRASS Tires - CST CAMBER 26 X 2.10 4) Brand: Schwinn Moab Elite Mountain Bike The frame is a Schwinn Gold Series MTB double-butted aluminum with a Suntour XCM V3 100mm travel suspension fork with lockout. The front derailleur is Shimano Alivo and the rear is Shimano Deore Shadow which give the bike a 27 speed drivetrain. The gear shifters are Shimano Alivo Rapid Fire and the brakes are Tektro Draco hydraulic with 160mm rotors Brakes: disc brakes Frame: Alloy with replaceable drop-out Freewheel: 9 speed cassette Front derailleur : Shimano Front fork : 100mm travel Rear derailleur : Shimano Rear Shock: No Rim: Double wall Shifter: Shimano 27 speed system Tires: mountain bike