Hi Damian
with glue it's a case of horses for courses: if i need a relatively quick bond, then i use CA (usually medium, sometimes with accelerator); if the bond is slower and under no stress then I'll use what's commonly referred to as Gator Glue (more on this later); If a high strength bond is required, and I can clamp the work piece, then it's either a two part epoxy, or if i can i'll solder.
Now, for Gator Glue, did you know you can make your own? Get on down to the hardware store, buy some generic PVA white glue and then dilute with a bit of water until you get a runny custard like consistency. You can then apply with a brush and wipe clean if need be with a damp cloth.
Some examples of what glue to use where: watertight doors to styrene-gator glue (or diluted PVA if you prefer); radar sets and other delicate items requiring a relatively quick bond-CA medium; railings-CA medium or thin at a few key points then Gator/PVA glue to finalise the bond along the entire length. (Gator/PVA is really good for railings as it flexes with temperature variations in the weather). For making brass masts solder or 2 part epoxy to assemble, with finer details added with CA. Then to mount to the deck, it's 2 part epoxy; mounting small details and fittings to the deck that aren't under load i use either diluted PVA or CA, where I can't use styrene glue.
Confused yet?

Really choice of glue comes down to what you're assembling and the load they're under...