Terumos
I've used both BD and Terumo.
BD's are superb in my view. The needle is practically at the hilt before I've realized I've jabbed. And I now ONLY use BDs, unless the pharmacy is out, in which case I go with CFS Intl (good).
Terumos are another story entirely.
I have a bunch of Terumo's sitting around, and I won't touch them (why don't I just throw them out?). Not after about four or five injections with them. Feels like puncturing your skin with a nail, and I inject 25 guage twice everyday and 22 guage twice every week, so I'm sort of a fulltime jabber.
I didn't think they made square needles anymore. Or maybe Terumo's Quality Control consists of guys filing down the points before they're packed. Damnation, they hurt!
Dex