I’ve been using spectra for 15 years now for both fresh and saltwater fishing. I’ve use all the connections mentioned and then some. 80# and up is all hollow core JB. 60# and down is solid of various brands. All of mine is green but that’s just me. The white is scary but is much easier to work with. 80# and up is all splices and loop to loop connection. 60# and below I use a uni to uni connection with an occasional Albright or some variation of an albright. The longest topshot is trolling and that’s about a 100’. At least it’s a 100’ at the start of the season. Flylining baits I start at about 15’ of fluro and retie when it gets to about 5’. Iron I use about 10’ of 50 or 60# mono. Jigs for calicos and rockcod ganions are straight tie to 50# and 80# respectively. Because spectra is hard and doesn’t compress like mono knots it does have a tendency to slip. That’s why I use more wraps and add a drop of superglue or zap a gap to the knot.