I just ordered the 5.5" Lenovo k910 vibe z. It's a bit above your price range ($400) but is the highest spec active dual sim phone on the market today. Excellent performance, Snapdragon 800, very good 13mp camera, 1080hd screen and top 5 (34,000+) Antutu numbers according to the reviews plus a competent (3000mah) battery. Best of all it's quad band gsm AND FIVE band wcdma so it's 3g on all networks worldwide Including the US (very few phones can match that for $400). One drawback is no sd card slot and only 16gb of storage of which 12gb is usable. But with 15gb on my Google drive that's directly available and fully compatible with Android (of course) I don't see that as an issue. Indeed my Nexus 7 is only 16gb and I still have 6gb free with both FIFA 14 and Dead Trigger 2 plus photos and videos (no music).