Best vs Acceptable Connections

I'm new here , but have learned a lot in the last few days. One thing I learned, I think that you guys could wire the space shuttle!!A question please to installers that make quality wire connections everyday. I know that soldering is probably the best way for connecting into the larger / higher amp wiring for auto start systems. My question is, what are other methods that are proven to be acceptable, ie. Scotch wire taps (of the proper size ofcourse), tee taps, others?? When are the "easier" methods ok? Please share your experience.

thanks,

Admittedly, soldering  and shrink tubing is the best connection. But often, the time and effort = expense is not quite worth it. I have good luck with crimps as long as I buy quality crimps, crimp well, and check your crimps (PULL on the wire from both sides, HARD). If it stays, then you have a good crimp. You'll go through a few extra crimps, but have WAY less problems.