roland or korg synth around 500 euro ?

well tutle says it all i hear you

p.s i am a newbie and i wanna learn keyboards

nothing but i gave tried yamaha mm6 i have not played roland or korg how about yamaha keyboards i like pipe organ sounds if that's of any help

Casio WK-3800 has 50 organs and they are editable.

That maybe true, but they don't sound like 'proper' organs !

To OP - are you looking at 2nd-hand, or brand-new? (limits the choice),

new not 2nd hand how about korg ps60 i heard this is good for the price tag ?

Korg has always been excellent at synth 'sounds' (which is what you asked in your orignal question )

If that's what you're after, for that price, I'd say yes.

http://www.korg.com/ps60 it looks like a good synth. You can edit the tones in your keyboard, apply effects, and you can edit them in your computer. It looks like a good buy.