I haven't bought into the name brand things yet (still new so who knows what will happen down the road). Yea, I know, too look good is to fish good... well, I make everything look good.
I bought a wader and boot combo from Cabelas for about $150-$200(i'll get crucified on here for admitting that) but I figured I'd tell you that you don't NEED to go top of the line. Sure they will have some great benefits and return policies, but as you're new like me, you don't know what you like in waders, boots and even rods and vests/packs for that matter. So until I settle in and decide what I like in waders, I'm fine with my modestly price waders that keep me dry.
If you plan to fish in the late fall/winter, I'd personally recommend going a half a size up in boots so that those wool socks will fit.
breathables with stocking foot and boots with felt and studs (be careful about the whole felt thing - you can't wear them in all streams - do some research " didymo") were really my only search criteria. Don't know if I lucked out or if I haven't been spoiled by really nice waders and boots yet, but I'm very happy with my choice. (they've held up through 2 years of 4 seasons plus some heavy bushwacking so I cant complain.)
One more thing, get a wading belt (some come with them). It'll keep you more dry not if, but when you go for an accidental swim.
Oh and the stupid little zippered pocket in the front of your waders makes a nice dip can holder.