This is all highly debatable. Ask a hundred people what they like and you’ll get a hundred different answers. I think Power Pro is a solid line it’s a strong durable braid where Nanofil is more of a finesse type of line. Nanofil is supposed to have the ultimate sensitivity but it has problems. It has virtually no abrasion resistance if you look at it wrong it will fray so a leader is a must and it has no shock resistance at all oh and did I mention it’s knots slip very easily so you have to use more advanced knots or it will fail. That’s why I like Power Pro cause even if it’s not the best at any one thing it’s not really bad at anything either (besides the line bleeding). I haven’t used either line for jig fishing I’ve used them for casting spoons and I’ve lost a ton of tackle on Nanofil from either the poor shock resistance, the fraying or knot slipping but it is sensitive and it casts far but it’s not worth the problems. I’ve also used other braids and had some issues and keep coming back to PP. As for leaders a lot of people seem to hype up fluorocarbon but I think most of it is overrated garbage. There are a few that are good but it’s not as strong as mono you can take that to the bank and I know plenty of guys that catch a ton of walleye using mono leaders. I’m not sold on the whole invisibility thing of fluorocarbon either heck one of the best leaders out there for invisibility is Maxima Ultragreen which is a mono. Leader length is also debatable one guy will tell you 7’ while the next guy says he only uses a 2’ foot leader and has success but for trolling it’s supposed to be 20’+. In the end it’s whatever works for you that catches fish with as little problems as possible.