W.S.
Bro, if you want best for bucks, go for Total Quartz 9000 Future series 5w-30, and change it along with good quality, genuine, OEM oil filter or Leppon / wix Oil filter for Altis 1.6 2016 model (which lasts at least 5,000 Kms), after every 5,000 Kms.
Otherwise, you can also look for Fully Synthetic oils by Liqui Moly, Amsoil, Valvoline, Mobil 1, or any other premium brand, and change them along with best quality genuine, OEM, premium oil filter by Toyota, after every 10,000 Kms (ensure that oil filter does lasts at least 10,000 Kms).
In both cases; oil grade must be 5w-30 (do not change it), 100% fully synthetic, with API ratings SN / SN Plus / RC and / or ILSAC GF-5, and genuine and original.
Of course 5w-30! No need to switch grade unless / until you face any type of problem (oil consumption / reduction, etc.)
If you use it, there is no harm in it. If I had to switch oil brand, I would go for it, before switching to other brand.
I hope, it helps. Thank you.