8# mono is my preference.  Maybe it's old school.  It's what I like.  No brand preference.  I spend the middle road.

5 years ago I tried a braid.  Learned that it really needs a sacrificial mono leader.  Super durable, this stuff doesn't break.  I lost a lot of line on a deep water snag.  Cut myself fairly deep trying to yank it free.

All spinning tackle.

4# trilene xt (it doesnt kink as bad as the other styles, but brand probably doesnt matter much) on the spinning rod for jigging walleyes and the past few years ive been using 14# fireline on the baitcaster. i got some 15# power pro a little bit ago and the stuff seems to really be a good line. casts a bit nicer and doesnt dig in the spool as bad, but then again im comparing 4 year old fireline to fresh from the spool power pro. the p-pro is a smaller diameter and is round (opposed to the flat fireline) which i prefer.

I've become a big fan of Berkeley Fireline Tracer Braid in 10 lb for my spinning gear.  I used it last year for a 3 week trip in the Q with great success.

I would like to fish against someone with the fireline just to see how things stack up. I have never fished it although I have fished power pro for a long time.

There is no question as to the sensitivity factor with braids. Yes, you will feel every little pebble that you bump up against. You can also troll deeper as the thinness of the line catches less water and thus your lure travels deeper. You can also run lures WAY back and still feel the bite AND set the hook with nothing more than a flick of the wrist.

Braids have some disadvantages as well. Power pro can be a bear to untangle if it gets a birds nest IMO. I generally start cutting rather than spend ten minutes getting it untangled only to have it do it again 5 casts later. Braids are also much more visible to the fish. That's probably the biggest reason I don't use it in the clear water of canoe country. The lack of stretch can also mean pulled hooks as well because there is no shock absorbing action that the stretch in mono has. The addition of leaders adds another layer of complication although it can be very effective. You must tie the FC with absolute preciseness to the braid however. It can be a royal pain in the rear at times especially if the wind is blowing you across the lake and tangling your sewing thread braid. Can you spell H-A-S-S-L-E? Lastly, All (myself included) have likely shared Preachers fate and had a good cut before the respect was developed.

One year I brought the castable FC only to have every spool fail after being exposed to an all day downpour. It was P-line FC and P-line is usually top of the line stuff. No more castable FC for me although many of the bass pros and guides I know use Bass Pro shops castable FC. They despise Vanish FC BTW.

I'm with Jaximus when I use 4lb..... Green trilene XT is tops in my book and I have beat some very big fish with it. I use it infrequently however and only on those sunny still days when the bite is tough. My go-to line is Gamma mono in 6 and 8. I always spool fresh line before a trip.

The mono is certainly less sensitive and a 6th sense is helpful. I set the hook on just about everything. Bump a weed and I'm likely to flick my wrist. Get a bit of slack and I'm reeling like mad to catch up. It's surprising how often those are fish.

My suggestion is to have a backup spool of what your used to in case the new stuff isn't all it's cracked up to be.  

All different answers prove it doesn't make a diff.  Just put something on and start fishing.