sumit3322 :
vMax :
Both are very good motherboards and you can't really go wrong with either. The Gigabyte just has a little more in terms of features including WiFi...The Gigabyte also has a lot of lighting with RGB but that will be a personal choice for you...I would swing to the Gigabyte, especially as I have the Auros Z370 Gaming 7 which has not given me any issues whatsoever...
sir i dont want extra features and rgb ports just wanna choose in terms of built quality and after sales support
Apologies but your question just said 'best motherboard' and nothing else...so my first answer was as is...In your current terms, it is as follows:
Both Gigabyte and Asus are top tier motherboard manufacturers and the build quality is excellent on both of these Motherboards as I am sure is the support. I personally would recommend the Gigabyte but as stated more of a personal choice as I have yet to have an issue with there motherboards over a 6 year period.. I would also state that I am sure that the Asus is also a very well manufactured and supported product, especially the ROG line..
Hopefully someone else might have a clearer answer for you....