Being smaller isn't a bad thing. My Snap On 1/4" ratchets make those look like rail road track. And the older ones were even smaller than the new ones. I like the older ones which were about an 1/8" thinner at the mechanism. They had a standard blade screw to hold them together where now they have an allen and they are sealed. I like the older ones because you could get into anywhere with them. I had lost mine and when I saw an old one on the Snap On truck I grabbed it up, and it was cheaper than new, cool!
I don't know, you aren't going to tighten or loosen really strong bolts with it being it's a 1/4" inch so I say the smaller the better.