I use Tamiya Extra-Thin Liquid Cement for general gluing, under ceratin circumstances I will use Testor's tube glue (Even then I put a dab on a napkin and apply using a toothpick) like for small parts that will fall off without the thinkness of the glue holding it up. For glass I use Formula 500 Canopy Glue and good ole school glue (Elmers). For resin I either use super glue or epoxy. Under the rare occasion where I use P/E on my builds, I use Tamiya Acrylic Clear in the jar, applied with a special tool I whittled out of a small dowel.