I have both, so I can speak from experience. I use the deep well
sockets about 5% of the time. There are many situations where deep
well sockets won't clear obstructions or otherwise are just cumbersome
to use. Also, since the depth of the deep well socket puts the handle
further away from the nut, there is a tendency for the socket to come
off the nut when using the very end of the socket. If I had to pick
one style, I'd get 12-point standard depth sockets.

Regards,
John.