How to play against Budapest Gambit

and now there are many good moves for white. 

4. Bf4 is one of top choices. 

No actually is there any out of book line ? 

I know Bf4 is good but that is in fact the most tested variation of Budapest. Black will be well prepared for that....... 

Thanks.. I'll check that out. Actually I am wondering why it's better to accept the gambit?

Check out Tim Taylor's book on the Budapest. While it is a repertoire book for Black, it gives some excellent lines for White. 

Other good books that may help include Boris Avrukh's Grandmaster Repertoire 1.d4 vol 2  and Bronznik's excellent 1.d4 - Beat the Guerrilla Openings!: A Powerful Opening Repertoire Against Annoying Black Sidelines. 

Speaking as a sometime Budapest player, I think both 4.Bf4 and 4.Nf3 are better for White if they know the lines well, which is why I don't play it much any more. 

Super easy to play against: This is the mainline way and probably best: 

I think this line is a very interesting one in Budapest Gambit......... 

after e5 what about Nf3 and if e4 then Nd2 followed by Nc3 and Qb3 with a brilliant french game with colour reversed. I think this is quite a surprising line than other Budapest main lines. 

Well if you are a Budapest Gambit practitioner then you might know the strategic problems black faces..... I want to know them. 

There have been plenty of sources provided for you to research the Budapest for yourself.

Mamedyarov has had good results with ...g5 after Bf4.

Thanks Magician..... I've also found a interesting line in Budapest where black can fianchetto his King's Bishop. 

 Carefully.

I'm getting a 404 error on that link.

Wow very nice research Deird..... So this is one of those gambits where we can't decline the pawn.... 

Yeah...