LMK04832: Single or dual PLL mode?

Part Number:LMK04832

I have very "good" input reference to LMK, but it is relatively slow (10 MHz). SYSREF output should have deterministic phase relationship to the input reference. Is is better to use LMK in single or dual PLL mode? I know that two PLLs can help if the input reference is bad, but I also think that they may add an additional noise in my case.