I have always used 93 from Sunoco, once in a while i get 93 from Delta Sonic...
I also ran seafoam through the gas when i replaced the EGR Valve....

ignition coil? pgm-fi relay?? (but i get the clicks) O2 Sensor??

No CEL light to work with, unless i drive the car.. which does blink while it misfiring, never took it above 40mph...mind you, this misfiring thing only happened 3 times now in about 5 months.. and it only misfires with the starting??
im clueless