As per what I heard from few dealers/repairmen, Amaron (Quanta) is slightly better than Exide (Chloride/powersafe) wrt UPS batteries, not sure how.
But Exide has stores everywhere and it is easier to buy the batteries and even contact dealers for warranty.
Amaron's dealer coverage is less comparatively. Even in a tier-1 city, I had trouble finding Amaron's battery for UPS in nearby stores (within 10 kms). They were available online, but I wouldn't trust this process when buying batteries.
Thanks for the tip.I tried Quanta it was of poor quality , did not last long. Exide lasts for years.