Different meanings?

AnonymousWhich combination is correct and why?

Any combination is possible.

Anonymous I understand they all have different meanings

I don't think so, really.

Anonymous and are correct.

Yes.

I have bought every record they have made.
I have bought every record they ma

I doubt that all four options are perfect in terms of grammar.

I. 'I have bought every record they made' seems to be the most appropriate to refer to the result at the present moment.
The present perfect in the main clause is essential to denote the result/achievement of the speaker up to now.
We are certain about the speaker having all available records of

Paul EvdokimovI doubt that all four options are perfect in terms of grammar.

Nevertheless, they are, Paul. You are being too prescriptive and following the guidelines for the verb forms too strictly. Native speakers do not adhere to those so meticulously as you would like.

Many thanks, thought so.

Mister Micawberfollowing the guidelines for the verb forms too strictly.

Rules and guidelines are what grammar is all about.

Mister MicawberNative speakers do not adhere to those so meticulously as you would like.

Well, I don't care much about native speakers - many of them throw f-bombs, s-bombs wherever they go, can't spel

Paul EvdokimovYou don't judge the command of English by 'nativeness', do you?

Primarily, yes. I can always tell a second-language user by his overly 'correct' grammar.

Mister MicawberI can always tell a second-language user by his overly 'correct' grammar.

I'm sure you'll cope with this envy.