Frog Toggs are pretty good. However, my wife gave me a HD rain suit that collapses into a small bag. The bag is about this size of a flat volleyball. Packs very nicely.
More importantly, the rain suit is comfortable, fits well - even over cold weather gear, keeps out the rain wonderfully, but is cool enought to ride in when it is hot out. The legs open up enough to fit over my boots (I wear size 15). I am very pleased with the suit.
I expect it costs a hundred dollars (that's what HD stands for, isn't it?). I like it much better than the Frog Toggs. The crotch of the FTs hang down too far. I split them once when swinging my leg over the bike. Other than that, they are OK. Priced nicely and packs well. Fit both top and pants in a shoe bag. My wife still uses the FTs and is OK with them. They are extremely nice in the summer as they breath well.
Hope this helps.
Jeff