I tried to find ADVAN DB 551 but not available in market. On the other hand, dBs have deep grove and may result in problem during wet season trvelling. However, they are quite soft, so will have lesser life.
I preferred Yokohoma bcoz it is Made in Japan, and price was reasonable of Rs.7400/- , a month back I got a quote of Rs. 8500/- in pindi.
195/60/15 has lesser side wall i-e 65mm is lesser than 60mm. However, speedometer will have only 1% difference for 195/60/15.