Have used Yokohama's all three major products C-Drive, Advan DB and the newly introduced Blu-Earth A and the one which is the most liked by me is the Blu-Earth A...The main feature of these 3 are like this that choose Advan for Super Silent Drive...C-Drive for Real Sporty Drive but with not so high noise offcourse and Blu-Earth A is the one which has the combination of both Sporty and Silent Drive with extreme grip as well and is hence considered to be a balanced product!!!
Now the choice is upto you I have told you the speciality of all these 3 best items from Yokohama and yes please go for none other than Yokohama coz its simply the best!!!
By the way...Nowadays the trend is of Silent Drive....That is what people like so hence I'll prefer you to go for the Advan DB as it is also the one made for those wehmi kind of people who don't like to drive with even a little bit noise and want that extreme silent drive as it is considered to be a Premium Product from Yokohama due to its Silence and Good Grip Features and is highly favourite among Pakwheelers and Pakistani People and so they always reject C-Drive and Blu Earth A but this does not means that these are less good...Its just that they are not super silent like Advan but surely have low noise levels!!!
P.S Grip of all these three is almost same!!!
And I have also tested the all three items from Yokohama like BadPigs is saying and I will agree with him that all three are best with some ups and downs as Yokohama doesn't makes anything bad!!!
But for your budget I will say in Rs.30,000 you can have C-Drive as it costs Rs.7500 normally don't know about the exact market rates...For DB and Blu-Earth A you'll have to extend your budget a little bit more as they are like Rs.8000 per tyre so a set of 4 will cost you Rs.32,000 so C-Drive suits you the most!!!
So Best of luck with the Decision Bro...Stay Blessed!!!
And please tell us what did you bought...Regards!!!