which one is best?

hello all..

which one is better 5.7 GHZ or 5.8 GHZ and why?

a) For point to multipoint wireless connections upto 3-15 kms
b) For point to point wireless links of distance between 4-18 kms.

kept in mind that there is very very less interference on both 5.7 & 5.8 in my physical area.

thx & regards.

It doesn’t matter, both are the same.