Hyundai Matrix new spark plug at 205,170km

I have used the Bosch FR- 78X Super 4 spark plug in the past and somewhere along the way , I sorted using the normal spark plug as it was was cheaper and my daily was very low, about 5 km only. And today I decided to change the spark  plug back to Bosch FR-78X. 

The old and the new spark plugs

Get my tires properly inflated and off we go....
Dammed...engine was smooth and the drive was wonderful. Really a great spark plug from Bosch. I bought it from Shopee for RM42 ( 4pcs).