Actually, Augat is known for good connectors and sockets. To be honest - those don't look too bad but hard to tell from the picture.
The problem sockets used to be the single leaf sockets (I don't think anybody makes those anylonger) and the twin leaf, sideways mounted sockets (make contacts on edges of pins and not sides of pins).

But in some cases - that's the good thing about machine pin sockets. The solder flows through to pads on both sides of boards. Good if you have a bad plated through hole.

To answer Bob's question -- the advantage of machine pin sockets is they typically have four tangs inside the sleeve. Makes contact on four sides of the IC leg. In fact, for high reliability boards (where sockets are occasionally allowed) -- they exclusively use high end machine pin sockets. But these high end sockets are of a different breed than what you find on most sites (including mine). The high end sockets - you are looking at typically $4 or more per socket.

But - for this sort of usage, there really isn't that much of an advantage of machine pin over twin leaf.
Single leaf sockets...now those suck. I don't think anybody makes them any longer.
Then, as I mentioned above, sideways twin leaf sockets also suck (think 'Scanbe').

Most of the machine pin sockets I carry were made by Keltron Connector Company... plus a few Mill-Max and British (forgot company name) sockets. Keltron is no more & the British company is no more. I'm thinking when my machine pins sockets are gone, I'm going to stop selling that type - but I still have thousands left.
My twin leaf sockets are either AMP (Tyco), Mill-Max or Amphenol. I avoid cheap brands such as Chinese brands - the pot metal used for the sockets is too soft, just asking for trouble in the future.

Yeah, I have seen Adam Tech before but never looked into them. If their sockets are any good, I'll see if I can get on their distributor list.