I still make my own but know this isn't possible for most, so I'd recommend 4 over the 3, a little more time is nice.
I'm still using the same wires I've been using for decades
Soak time varies, 15 seconds to 1 minute depending on application and whether or not someone else is helping
Router table is much better but JMO
I can't speak for others, just what I use mostly
HTH,
James
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