I have been very pleased with my two pairs of higher end Simms stocking foot wadders. When the first set was eght years old and had seen approx 150 days of fairly hard use, I sent them back to Simms for service. For about $75 they changed out the boot foots with new booties and fixed all the pin holes. They now work as well as they did when new. They certainly don't look new but I don't care.
I have two suggestions. If you know for sure what you would like to buy, you can probably find lasts year's model new on eBay for 30 to 40% off.
Also, because you are going to fish the salt, make sure your boots are large enough. I wear a 10.5 street shoe and have used Simms size 12 boots. Most of the time that is the right combination. But sometimes I wish I had a size 13 boot so I could put more socs on my foot. Because you are going to be fishing hoods cannal my experience says you boot should be no less than 2 sizes larger than your street shoe.
Bootfooots are the best but they are also the most expensive.