I always use the H&R Block at home online filing thing. They let you do it for free if you're active duty military so that's why I choose them. I've been doing it for almost 5 years now and no issues at all, no audits or anything.
'11 BMW E92 ///M3 - ZCP and DCT
'13 Toyota Tundra - 4x4 Platinum CrewMax, 5.7l iForce V8