I run Synaps 12 x 18 10ml through the bypass set on coated 257-300. Have printed 500 simple "Vote Here" signs for Election. Nothing heavy or with alot of graphics, but the prints are 'clean'.
+1 for Synaps on a 700 with those settings.. I almost got fired for ordering it (because of the cost), but we went through a ton of it after I did. You should also check out Papertyger by Neenah.. Runs the same but it's cheaper. And harder to find - no Xpedx or PaperPlus last I checked. Neenah.com has it.