That looks like an excellent collection! I have bought many from Jameco, and I would warn that just sitting in storage between uses, the nylon can get pulled apart by the strong spring. What I have done to remedy that is to make a clip like this from a paper clip to hold the sides in just a tad to take the spring pressure off the hinge and much of the rest of the clip:
Attachment:
DIPclip.jpg [ 69.18 KiB | Viewed 3020 times ]
(Obviously you'll need to remove it before using the DIP clip the normal way.)
I have a blue one from Pomona Electronics that's made differently and they doesn't have that problem.