Had inquired about 150 F and 150 S in Bangalore. The main difference is that in 150 F disc brake is standard. Power and other specs are the same. Pricing for 150 S with disc is 66,000 OR and 150F with disc is 71,000 OR.150F looks like a head turner with more road presence . 150 S is having the same old looks of 100S,100T,125S discover series.