What are you opinion on these guys? Compare to powerpro?

I like SW Stealth. For me its in the same class as PP. I used Stealth for a long time before buying Spider Wire Ultra cast. Stealth is a good strong line. It casts easy and is pretty quiet.

I have one reel spooled with Stealth now.

I never had a problem with the Stealth line and have it spooled on a lot of my reels.  Probably 50/50, with the other being Power Pro original. 

its the only braid i use, never had a problem with it so why change.

i use 15lb on my spinning rods,

 and 30 or 50 on my casting rods.

 

good braid for a good price.

_{Its about all I have ever used.  I dont have enough experience with power pro to compare though.  I dont think there is much difference between the two.  I'm sure some one will tell you the difference is huge and you'd be a fool to use one over the other.  Spiderwire is usually less expensive though.  I've used 8#, 15 and 20# mainly, and 30#, all on spinning gear for spinnerbaits, spooks and frogs usually.  I switched to a palomar knot from an improved clinch knot and stopped having my knots slip.}