Build Advice Thermal Compound

Hello everyone,

I am very confused on Thermal Compound... There's some mixed reviews about Arctic Cooling MX-4 Thermal Compound Paste NON-ELECTRICAL Conductive 4 Gram.

and I'm also confused on this as well Noctua NT-H1 Pro Grade Thermal Compound Tim Solution 3 Gram.

So which thermal compound is better?? And what do you use for thermal compound?

 

I've had amazing results with MX-4 when spread with a card, 10c lower than Arctic Silver 5 on the same CPU.

 

I use MX-4 and have found it works really well and gives great temperatures, can't really speak for the other one though.