^ batt life on the razor 2.0 is disappointing. Personal experience here
I bought one for a friend in December since it was on sale at a nearby store (got it for 4K). I was able to play with it for a few days before handing it over. I think the battery life is good given its 1,780 mAh capacity. But if you're comparing it against everything else on the market, yes, it's battery life is below average -- but so is almost everything else below 5K Php since all of them have 2000 mAh or lower capacities. In comparison, even Samsung puts a 2,600 mAh battery on its "cheapo" Galaxy Grand Prime.
My main complaint with both the Razor 2.0 and Quest would be the display brightness. It's kinda dim imo.
At this point I suggest the Cherry Mobile Fuze S. It's exactly 4.5K Php, has a 4,000 mAh battery. I'm just not sure if the camera is good in low light. Haven't tried it yet.