Average content on instrument flying and the quality fluctuates from time to time. Sometimes the content just feels out-of-date and doesn't fit very well in the modern instrument flying environment. To make the most bang out of you buck, I would instead suggest AOPA's Air Safety Institute, PilotWorkShop, Rod Machado' instrument flying handbook, whose content is presented in a more vivid and catching way. The customer service is below average - I didn't receive the bonus magazine that was promised with my annual subscription and I've reached out to them multiple times regarding this issue. At the beginning their response was prompt and responsive and promised me to resend the issue but the supposedly resent issue has never arrived (even though my monthly issue arrives with absolutely no problem). Later on they just ignored my requests... I would NOT renew with them. read more