Learning openings - who should I watch?

I have recently started to see the 'tactical' side to 1.d4 (in some lines you end up playing f3 in the Nimzo - Indian!!) and want to see how games arising from openings like this pan out in the master level (anyone who is FM or above is who I'm looking for)..

Therefore who's games should I look at that would be suitable for this?

Dlugy I believe plays lots of tricky d4 openings, not sure who else.

In the nineties Shirov had a nice string of wins with the 4.f3 Nimzo. He has an aggressive, attacking style. He studied with Tal after all!

He seems to have peaked as a player but you won't go wrong studying Shirov.

Mamedyarov played 4. f3 too. Volkov, if I recall it right, though he is not very top (something around 2660 peak Elo) played it A LOT.

Thanks Mamedyarov was a reccomendation for learning this opening.

Alekhine was an amazing combinational 1.d4 player. 

Shirov is a good idea to study but 4...d5! illustrates the flaws with 4.f3.  

You should aim for positional advantages out of an opening, the tactics come later when the opponent screws up.