If you need it to be insulated, and have had a good experience with Simms, they make a good option, go with it.
Personally, I prefer a shell and layers.
I have (or have had in the past)
Simms Pro Guide jacket (shell)
Patagonia Salt II
Simms Camo wading jacket
another Simms Wading jacket
Bass Pro 100 MPH jacket
Cabelas Guide Wear jacket.
All are good jackets. Simms products are my overall favorite for effectiveness, design and longevity. Pro Guide version is my current favorite. Camo Wading jacket has been going strong for nearly 15 years.
Patagonia makes a great product, but I don't care for the Napoleon pockets due to rain access,not to mention their fish politics.
Bass Pro.....I hate the big multi colored logo on the chest.But very good and very well designed.
Cabelas Guide Wear was top notch 20 years ago. Based on friends recent experience I don't believe it is good as in past years.