Let me throw you a line. Think of forum posts as a kind of email to a whole group of people. When you send someone an email, you are usually not the subject. Same here.
Aside from that, make it more clear: 1 plates, 2 exposure device, 3 processor. Which 2 do you have, and which one are needing suggestions for?
BTW, I am not going to be the one with an answer for you.