I've got the MX Sport. Great bike and I've never had an issue with it "only" having mechanical disk brakesJust got back from Halfords and the medium is perfect. Thanks for your help.
I'm divided out of these three bikes:
MX Race
MX Sport
MX Comp
The MX Comp is meant to have more features e.g. hydraulic brakes etc though it is really worth it for £100 more?