Last year I took a step up in arbor size for a spinning reel,from 4000 to a 6000 after many seal chases that spool a 4000 at 10 pound test.I have found weight of reel is same to balance with rod. For casting has a smother flow through guides with larger arbor reel.More line.so when a fray in mono just trim it and you keep fishing for the day without a respool of line.Distance and accuracy is whats needed for coho in lake river and sea ,matched up with the right 9' rod your set to tackle big fish anywhere. Mitchell Garcia 300 is a fresh water heavy metal trout reel made for fiberglass 6.5' rod.We now use composite graphite and balance differently .We in our family have many mitchell 300's, we use 6 pound test and float worms or roe for the kids in the lake ,every one of us has used one as a child.please don't use vintage mitchell reels in the chuck.