Before there ever was a 1/4 ounce version I used the 1/8 ounce all the time. So, now that there is a 1/16 and a 1/4 ounce I still use the 1/8 ounce.LOL When something is working why change, right?
On the River, you may need to use the heavier 1/4 ounce if you are fishing any of the current areas. I know Adam and I use the 1/4 ounce when we fish below the Dam in Sartell and the extra weight is needed to keep the spoon under your flasher.
Overall the 1/8 ounce will meet all your needs- Perch, Walleye & Crappie. The bigger and smaller spoons all have there place and are more situational spoons for me….I use them in certain situations. With that being said, I will still carry all 3 sizes.