My SO FLL80 3/8" ratchet. It's sometimes overkill since it's 17 1/2" long, but man, is it smooth. So much nicer than my Craftsman. As the Craftsman's die, I'm replacing them with SO ratchets.
My 14mm/17mm extra long, zero offset double box end wrench (mostly Japanese that rolls in my shop). Do oil change and brake services with just one wrench!!
My other favourite tool is my Snap-on 8mm/10mm 1/4" flip socket, wish they made one in 6pt instead.
I seem to always grab my SO FHLFD80 and my SO deep chrome {magnetic holder} 3/8" metric set, also my SO ratcheting screwdriver. Them 3 items can do about anything, lol...
Flash light, followed by either a 1/2" or 3/8" impact gun. For hand tools its either my SOXBM1315SA 13/15mm offset wrench or SO F851 flex head ratchet w/hard handle.