I've been using turbo tax for many years with no issues as long as you proceed slowly and read carefully. I used a CPA for a few years and when he got up to take a whiz, I glanced at his computer screen and he was using Turbo Tax and charging me 15,000 baht per..... I've been a bona fide resident for about 12 years and never run into a problem. With a family of 3 and no deductions except for the standard, I can make around 110K before I need to pull out the checkbook. More info at
Internal Revenue Service (bona fide resident)