Thanks a lot guys for the nice comments.
Here are a few pics not in my garage.
Pic 1: On the Erode - Coimbatore road. The spots on the front bumper are bug fatalities. I seemed to have killed quite a few on that drive!!
Pic 2 - 4 : Taken when the car was brand new. @Jaggu - the alloys for you.
On the diesel questions - well I've personally noticed that the noise seemed a bit more at first. However it lessened after a few 100 kms of running. The pick-up seems better too (seat-of-pants meter!!). I did test it shifting to normal diesel for a 1000kms or so.
Regarding smoke - have not really checked that out.
I talked to the technical supervisor at AVG. What he told me was they don't have any recommendations as long as I stick to one. No switching back and forth. I used Xtra Premium for around 70,000 kms on my 800 and didn't have any bad experiences. I am of the personal opinion that as long as you stick to one type it's fine.