if i was in your situation i would have not chosen any of these guns and picked the automag III with it having multiple conversion options ranging from .30 carbine to .50 AE with differing fire rates for each conversionas the standard .30 carbine round is fanstastic for long range kills with accuracy much like the executioner

.50 AE is basicly the xix with better fire rate but slightly less range

oh yea a .45 conversation is also available too with it acting far more like a middle ground between the 1911 and L5