Depends on what I need. Mostly B&S, Artcraft, Badger and last resort B&H. I get the feeling with B&H that some times they try to slip one by you. I ordered a Rodagon G 150 enlarger lens and had to return it, terrible specs on the glass. The I ordered a Jobo and it was used and defective. Had to send it back. I did not get a hassle and got a new lens and a refund for my money on the Jobo, but the hassle was unnecessary.
Why don't you check Calumet, maybe they also have ortho lith film.