So I'm looking to buy my first mountain bike and my budget is £500. The options from calibre are the calibre two cubed, rake or line 20. Apparently, the rake is good but hasn't got a tapered headset. The Line 20 is decent with 2x drivetrain and air fork. However, some people have been saying that the latest calibre two cubed now comes with upgraded tires and a better fork but the website has not been updated yet. Which should I go for?