FAR23 (Phenom) vs FAR (any Learjet) should be considered if applicable (meaning both pilots have to have ATPL, one has to be the PIC, have full ATPL with sufficient experience).Cabin size of the Phenom seems to be alot compared to the Learjet. No Thrust reversers for lower maintenance and weight maybe ? (Phenom 300). From what I hear the Phenom 300 is a really great and capable aircraft for the value.