Hi, I have been reading the posts about different code readers. I have a T6 Caravelle and am not really looking to unlock any extra features or conduct programming but would like something that will perform fairly comprehensive diagnostics if required. I have been looking at the OBDeleven devices but can not fathom if you have to pay for one of the subscriptions or can you just purchase a device as per below and use that to read fault codes/reset faults etc? Thanks, Dan.