Well, if we're putting in plugs for our favorite cyanoacrylate glues, mine goes to Mercury Adhesives. I've been using them for about two years, now, and never want to use anything else. The bottles don't clog, either. I did have one bottle of medium viscosity go thick on me, but that got left out in the outrageous humidity of the northeastern corner of the Peoples Democratic Republic of Illinois for a month. They still offered to replace it (no questions asked replacement guarantee) but the cost of sending it to them was the cost of a new bottle.
The Pacer stuff is pretty good, and widely available. Loc-tite is good stuff, but shrieking expensive.