Queen Gambit Accepted or Declined

Yeah. Good warm air bro. What people forget... QG ain't a proper gambit. If you play QGA... just let the pawn go and get a solid development lead. Watched a vid by GM Dachesvilli... where he played QGA and ripped White to pieces. Don't have a link, but 3.C5 was important move.

Even in the Queen's Gambit Declined, there are many lines where black's best move is to play ...dxc4, particularly after white has played Bd3. So, it's really just a matter of timing. Black can play it early (QGA) or play it later (many lines of the QGD).

I did a little research using the Master database in lichess. There are 20,501 games in the database where black plays 2...dxc4. White wins 33% and black wins 20%. 

It's a little more difficult to research the Queen's Gambit Declined because I do not consider systems like the Albin Counter Gambit or the Chigorin to be true QGD systems; rather, I consider them to be completely different systems. Sure, black doesn't play ...dxc4, but those systems are really not what we mean when we think of the QGD. Consequently, I only considered games in which black played 2...e6 or 2...c6. 

There are 142,502 games in the QGD. White wins 33% (same as QGA) and black wins 19%, only one percentage point below QGD. Almost a negligible difference. When you consider the non-precision of play at the non-master level, I think it's fair to say that one's chances are just as good accepting the gambit as declining it.

You should accept the gambit if you like the kinds of positions that arise from accepting the gambit. If you don't - well - then don't accept the gambit.

As white, I mostly play the Queen's Gambit and I have had my share of difficulties playing against players who accept the gambit and who have clearly done their homework. It's not like I jump for joy when my opponent accepts the gambit. There are actually lines where black can aggressively try to *keep* that pawn and, if white doesn't know what he's doing, he'll soon find that he is playing a *real* gambit.

Jonathan Schrantz has an interesting line he goes over in the below YouTube link entitled "The GREEDY Players Guide to the Queen's Gambit Accepted." It's not a particularly sound line, but I'm guessing a lot of players with the white pieces would get confused.
https://www.youtube.com/watch?v=2Dbv3_HTLu4

If one consistently accepts the gambit and has studied it - he's probably more prepared than white because Queen's Gambit players don't see the accepted lines as often as the declined lines.

By the way, despite the Slav's stellar reputation, 2...e6 actually fairs slightly better than 2...c6. 
 

one must fully decline any gambit presented and actively not take hostage any enemy troops and perform the countergambit opening merge known as the botezcloud where one plays Ke2 and follows up the attack with Qf3, pushing aside the king since females first, and taking immediately on f7 not even waiting for black to move. Known as the botez gambit combined with bongcloud, one of the deadliest combinations in chess history.
when you have fulfilled your destiny by performing this dangerous countergambit, you will be given your indulgence towards chess mastery. You will also achieve your first ever chess robot to help you with your difficult journey ahead of yourself. (botezcloud opening repertoire and robot sold seperately)

one must fully decline any gambit presented and actively not take hostage any enemy troops and perform the countergambit opening merge known as the botezcloud where one plays Ke2 and follows up the attack with Qf3, pushing aside the king since females first, and taking immediately on f7 not even waiting for black to move. Known as the botez gambit combined with bongcloud, one of the deadliest combinations in chess history.
when you have fulfilled your destiny by performing this dangerous countergambit, you will be given your indulgence towards chess mastery. You will also achieve your first ever chess robot to help you with your difficult journey ahead of yourself. (botezcloud opening repertoire and robot sold seperately)

I can vouch for this. I am undefeated playing the Botezcloud.

Queen's Gambit Accepted is viable. It was the choice of Kasparov and Radjabov after they abandoned the King's Indian Defence.
https://www.chessgames.com/perl/chessgame?gid=1333268