As it's something that's come up a few times, especially in the Novel related threads, i thought i'd actually broach the subject for us all to discuss.
Now, in the Abnett & Mitchell novels the tech levels of most societies is reletively high, for example you have hover vehicles aplenty (most notably in one of the Ciaphus Cain books).
Yet in the 40k canon, the STC for hover vehicles is a rare thing.
No longer do the Marines have scores of jetbikes, let alone the long forgotton hover surfboards.
Just the simple Vincent Blackshadow warbike (sometimes Trike) and if they're really lucky a much repaired Tornado or similar variant.
How have you found the vast differences between established canon, novel worlds and the uprising "fanon" which has seen the preffered grittier version of the setting which if oft missing from the novels and sometimes only found in the old editions of 40k..
Which setting do you prefere, grim & gritty medival with guns & swords where everyone is guilty and its only a matter of time before you get killed for heresy, or the hyper technology spies & psykics....
Discuss, if you will please!

Imagery is all good and well, but sometimes it comes with a price...