I ended up picking up a set of SAC (Motorsport) +75% injectors from Lincoln Diesel here on the form. Their reputation for customer service is well deserved, that was one pleasant transaction, and they even threw in a couple unrelated gaskets I needed for free!
I'll do a post on the injectors themselves in a few days once I finish the tune, but the initial impressions are VERY positive. Glad I went with the SAC-style tips.
Glad to hear Dave! Thanks for the kind words!