I agree that crimping is second to soldering.  However, to snub crimping (were applicable) is a bit snobbish IMO.  If you are soldering even the deck wires in a average install then you are going above and beyond.  Nothing wrong with that really, then again, nothing wrong with crimping.  Maybe I will switch to soldering in the near future though, the fact I admit it is better sort of takes the shine off crimping.  Tombrooklyn, cool link.

The problem with twist and tape, is it is not oxygen tight.  So, the connection will corrode, and will evenutally fail.  End of story.

Solder, can also fail, if you use bad technique.  If you know what you are doing, IMHO it is best.

The heatshrink with the solder preforms and hot melt on the ends is the very best, and expensive.  Check out Raychem.

Crimp, IF, repeat IF you use a quality crimper, not the $5.00 tools, the $100 +kind.  IF you use quality crimps, like Amp, 3M, T&B, Panduit.  You have to use the right size for the wire gage.  If you use the wrong size,  cheap crimper ,  cheap crimps, then worse than solder.  Never pre tin a wire when crimping.  And if crimped right, you NEVER have to backup solder.

For a no brainer, wire nuts with the metal spring insert, the proper size will squeeze the wires so tight,  it is oxygen tight, and if in doubt, a little grease, silicone is best, before screwing on is even better.  Use a wire tie or military lacing cord, to support the wires just under the wire nut.  Best when changing systems all the time.

My $.02

Rod