Good morning bro....
you have woken up about the knocking fiasco, there has been a havoc about it on multiple threads. Many say it does, many say it doesn't. Nonetheless both variants have their own value for money it all depends on person to person.
And also you won't be able to book a Turbo variant because currently Atlas isn't producing them nor they are taking bookings. Rather they have forced previous customers who booked and were awaiting delivery to change to 1.8 variants or take a refund because of no production as of now.