playing styles of top GMs today

I've been reading through Kasparov's section on Stein in My Great Predecessors 2, and it does seem true that Stein was capable of producing Tal-like sacrifices.  The technical side I am talking about would pop up when he was facing off against very strong players like Fischer.  The young Tal liked to take chances against pretty well anyone, whereas Stein could reign in his impulses when necessary.

Craig Pritchett's book Chess Secrets: Heroes of Classical Chess includes both Magnus Carlsen and Viswanathan Anand, although in John Watson's review he accuses Anand of engaging in "murky complications".  Classical players occupy the centre with pawns, develop towards the centre, attack when the position calls for it, but are equally willing to trade down to a winning endgame.

Neil McDonald's book Chess Secrets: The Giants of Power Play includes Veselin Topalov.  Power play refers to aggressive, attacking or sharp players who like to sacrifice material for the initiative.

Neil McDonald's book Chess Secrets: Giants of Strategy includes Vladimir Kramnik.

Interesting thread. 

What about Boris Gelfand?

Gelfand = Pal Benko

Carlsen = Kasparov