I recently started to use powerpro 30# and I have to say it's amazing stuff!
really sensitive and strong as can be. it's all I'll use from now on.
Bait cast or spinning?
spinning, I use it to pull plugs. it's tough enough to retrieve a stuck lure, casts well and just plain works. since I switched I've only lost one crankbait. prior to it I'd lose 2-3 a day. it's paid for itself and then some IMO