I used King Schools for my private, but when I started my IFR training, the 141 school I attended only used Gleim.  I tried Gleim for several weeks, but it wasn't working for me.  I paid for the King IFR training, and everything made sense!  I'll be back for future training!!!
                            
                            
                                
                                    Bob W.
                                
                                
                                    07/01/2016
                                
                                Instrument Rating Ground School & Test Prep