The left engine.
But probably the one that cost me the most trouble was the autothrottles. What a carpet dance that was....
Single Pilot operationsanic:
The avionics in your Cirrus are probably more advanced than a CRJ.
Apparently you can MEL the oil pressure master warning message on the Saab. We refused to fly it after one flight filled with *ding*ding*ding* as it cycled on and off.