Originally Posted by Manimal
Ah. Makes sense. And no need for 1/4" then either?
Ive a completely different take on this - based on motorcycle building, professional bench time, and years of employment with a major tool company
My shop sockets are 1/4", 1/2", and 3/4" (NO 3/8" in the shop) - the 1/4" & 1/2" overlap from 10mm to 14mm and work well together, similar for the 1/2" and 3/4" overlap at 26mm-32mm. On fasteners in the overlap range you have the ability to select drive size based on access and torque needed and cover the most common sizes on a Defender as well.
3/8" in the truck as field tools - decent construction but nothing fancy as they spend more time in transit than in use.
Three wrench sets minimum - open, combo, box end, with at least one of them being offset. Overlap the common sizes and the range from 8mm-32mm with one set going smaller and the other set going larger (I like to run the open to the larger sizes and the box end at the smaller range with the combination set spanning the whole gamut)