Best waders? Simms G3 or Patagonia, but they're also crazy expensive, especially for something you wear for just 2-3 months out of the year here in Texas.
A pair of breathable stocking foot waders from Cabelas or Magellan are 1/3 the price and are pretty damn good for the money. Alternatively you can look for things on clearance at places like Sierra Trading Post which has some really good deals on waders if you don't fall in the meaty part the sizing bell curve. I got a pair of Patagonia Rio Gallegos for 50% off from there and I've been super pleased with them for the 10 or so times I've had them out of the box.
I would say Simms G3 Guide are the best at $500. Academy Magellan Mag2 waders are the best for the money - about $120 before any sale. Then you need wading boots. If you can afford the Simms waders, you might as well get the Simms wading boots.
I've got an old pair of Simms that I bought via an online auction. I think I paid something like $35 or $40 for them. Used them for a season and found all the pinhole leaks...shipped them back to Simms and they repaired them for free. All I paid was shipping.
So, that's what you're paying for when you buy Simms. Lifetime guarantee on quality and free repair when need be.
I say Simms, but you don't have to go with the g3s for quality. I have a pair Freestone waist highs, and Headwaters that are over 3 years old. Still rocking like they were new. However, if they ever start leaking, I'd probably invest in the waist high G3...