I have a set of the Frogg Toggs.....actually it is my second set.......the first set ripped the second day out!! The concept is good...light weight, packable, etc; however, the durability is defintely an issue. For me the FT are something you could keep in the boat as a last second cover if an unexpected rain comes in.
I now just use my Cabela's MT050 (?) Hunting rain gear for fishing as well. The only thing that I don't like about them is I have pants for bottoms instead bibs!! Bibs are definitely the way to go!! As for keeping me dry, they do a great job of that.......unless I get a little wet around my waist do to having the pants. I would recommend Cabela's gear (pick what works best for you), but make sure you get bibs!
Good Luck!
Trey