What do you want in a chess set?
What are your experiences?
Which, if any, do you own?
First two things I think are:
Do grandmasters have a set tournament for blitz tournaments? I'm sure they all have their favourites and the board doesn't effect the game.
I don't see how any chess set would be bad for long games.
I think with a chess set you are mostly looking at style/size and that is an opinion area. The other thing you might be looking at is portability if you plan on bringing it a lot of places. Again how portable you find something is an opinion. You might want something that folds or rolls up to bring places or you find no problem with a large solid board that doesn't fold.
I was going to answer your questions, and then I realised you have already created approximately seven billion threads like this already.
What do you want in a chess set?
What are your experiences?
Which, if any, do you own?
Waiting for a response.
http://www.thechessstore.com/product/SGR375R/German-Knight-in-Rosewood-with-Rosewood-Board-Box---375-King.html
I mean is it similar to the one grandmasters use in blitz tournaments?
And is it good for long games?