I reverted back to 4.2.2
The battery drain for me with 4.3 was horrendous. Also my phone was pretty much constantly warm. I have an extended 5200MaH battery (stock is 2400) and I lost 10% in 2 hours simply being on standby in my pocket. On my extended battery running CM 10.1 if I left it alone, after 2 hours I'd still be on 100-99%.