Wooden Floor

Trying to make a wooden floor material ands i need some help , i just wanted to know using a Vray material what are good values to make a wooden floor that has blurry reflections , i tried .5 but i thought that was a bit too blurry then i tried something else and that wasnt blurry enough , i cant get the right effect .

Can anyone give me some tips on how you make these wooden floors using Vray materials

Thanks