I love the 6mt 4cyl combo of my car. My mileage has been crazy, 39mpg is pretty doable, never a tank under 29mpg so far.
E36/7: Dinan/RMS stage 2+ blower@11-16lbs of BOOST! 18" BBS LM's, too much more to list
F30: 6mt, SOLD
'06 Saab 9-5 wagon 5mt LSD, clipped turbo, 19psi, 400ft lbs of tq