Hey guys, some update:
I changed oil on Monday and this time used Pennzoil Ultra Platinum instead of Platinum. Engine sound didn't change even though, this time I was used Honda oil filter and not Purolator One. I thought the noise in the engine could be a filter issue, but looks like it could be the oil itself or the way my engine reacts to it. What I did notice though, is that after I first switched to full synthetic back in January, the engine noise was more prominent, but after driving on the oil for 1k or so miles, the noise started to decrease. Now my car has fresh full synthetic oil and noise is louder again