I am using Philips 100/90 Rally halogens on Alto as well & am very satisfied with the result.
Cost was 150 per bulb + 400 for wiring harness+Relay(this is a single assembly no cutting of wires) So total was 650
130\90 bulb was 200 per piece but the installer advised against it , he said dont put it if you are running is less than 30-40 kms a day guess these bulbs eat a lot battery. But once the harness is in place you can switch to any bulb.
Hope this Helps
