I own this device, its my main phone, its a great phone. Really good screen, glance is there too which is always handy, I don't notice much lag either. The only recent issues have been Microsoft related with them pushing out broken updates that crippled mail etc, this is nothing to so with the phone however.
I would recommend it, I don't think a phone this good will hit this price point again soon, with Lumia winding down it seems and most windows phones coming out are high end and not budget.