Chinese phones have come on a long way in recent years and are starting to compete favourably with Korean-made ones in terms of technical product.
Call me paranoid if you like (I work in aerospace, including MOD/civil, US DOD/DOS items), but I can never shake the feeling that Chinese internet-connected products are totally secure. We're certainly not allowed to use them for business purposes. If you're happy that would never be an issue for you, I'd say go for it. Have they resolved their issues with Google updates now?