What opening to play against 1.d4 ?

I play that sometimes and on the 4th move I tend to go with d6 rather than c5. White is still slightly better, but there is no clear plan for white to gain a big advantage. After that, it tends to go

5 O-O Nd7

6 c4 Ngf6

etc. and it's pretty even.

The Queen's Gambit declined is the foundation of a ton of defenses against 1.d4. It's often useful to look at the Slav, semi-slav, nimzo-indian, queen's-indian, and bogo-indian all as variants on the QGD which seek to make different compromises - in the nimzo, bogo- and queen's indian, there are almost alway times when to play them well you have to recognize, "If I play D5 now I'm essentially transposing into a very favorable QGD." 

So start with the QGD. 

The Tarrasch is a lot of fun - and certainly good enough for club-level players, I mean, heck, didn't Kasparov play it in a championship match? - but does require a very aggressive mindset otherwise you're just worse. If you're not comfortable playing dynamically around a static weakness, it's not a great choice. 

over 90% of time people like to paly the Queens Gambit against me. I just say screw that by going for the old benoni

Why? The Old Benoni isn't great.

you think Old Benoni  is a joke, until you lose against it. then you feel like crap

I like to play the Modern Benoni! Very double-edged positions

No I'm not. It's well known to be favourable to white because he can occupy c4 with a minor piece, especially the knight (Nf3-d2-c4). That's why people play the Modern Benoni instead of the Old Benoni...

Yeah that's alright, just not the Old Benoni

Yeah obviously. I've lost against worse openings than the Old Benoni; somebody has beaten me with this opening:

That doesn't make it good. I gave reasons in the other post why the Old Benoni is inferior

It isn't, Ponziani is this:

The Ponziani is just about fine, but the Old Benoni and the "Macleod Attack" are fairly suspect. As I explained in a previous post, the Old Benoni allows white to place a knight on c4 to attack the weakness on d6. 1.e4 e5 2.c3 is completely unknown, but it's definitely worse than the actual Ponziani as white doesn't have the pins on the knight on c6.

Black is only completely fine in your line because you ignored what I explained earlier. As I already explained more than once, white isn't going to put a pawn on c4 as that square is left open for the knight. If you want to show black is fine, look at this line:

Why would white play 5.e4 and not 5.Bg5?

Again, I don't understand the moves you're giving for white. Why is white obliged to trade on f6? I would just keep the bishop pair and retreat the bishop after h6 was played. Could you please provide explanations for your moves? What do you see as the plans for both sides here? As I said I think this is a clear advantage for white and I would never play such a position as black, so I'm curious about what you like about this (I'm not interested in what the engine says, but what are you saying about this position?)

I just did - white doesn't take on f6. I restate - you haven't given evidence for your point of view, but just lines that I'm not convinced you understand. Please prove me wrong - I'm not trying to argue with you, I just want to understand your point of view and where exactly you're disagreeing with all the titled players who believe the Old Benoni is inferior.

Fair enough if you just prefer to play black. However I'll take the bishop pair in this position but anyway to each their own.

what about the slav defence?

or the old benoni defence 

1 d4 c5 2 d5 e6 3 dxe6 fxe6

the old benoni ,

is a good approach to 1 d4