I have the Duralast 40pc as well as the comfort grip ratchet. I wanted the have a complete 3/8 set of the Duralast "Chrome Molly" sockets and the old style metric "master" set (p/n: 70-324) is no longer available. What I did was to buy the 40pc set and fill the missing sockets by buying the older "Chrome Molly" singles. I had to visit a few stores to find these. You have to make sure the label says "chrome molly" and also compare the socket visually because sometimes you will see a newer CRV socket with an older label.
The missing sizes are:
8mm Shallow and Deep,
9mm Deep
11mm Deep
7/8 Shallow
1/4 Deep
3/8 Deep
11/16 Deep
I found these NOS singles for about $40 total, so for $80 I have every socket in the master sets (except the trays) which were sale priced at about $110 and also got a ratchet, spark plug socket and two extensions.
PS:
Do the "spring clip" mod on the ratchets.