I've been a mag brake person for quite some time now. I've had lots of very fine reels that featured centrifugal braking, and I always seem to get rid of them after a short time of fishing. It's not really the external adjustments that I prefer, just the properties of how magnets affect the spool's rotation. I find that mag brakes excel at long distance casting and skipping, and the centrifugal brakes are better at pitching. I usually skip instead of pitch, so I literally don't have a desire for centri brakes.
That said, I've been wanting to give the Shimano DC system a try for a LONG time... and I finally obtained one... and then another
I have a brand new Scorpion DC, then just a couple days later found a killer deal on an older Metanium DC.
First thing first, I spooled up with 8# Izorline XXX as a control to test the stock Scorp in the back yard. Also used a control rod and 1/4 oz dummy weight. No measurements in feet, but I marked exactly how far I could cast the dummy. Nothing seemed very impressive, but I've never done this before with ANY of my reels. The Fluoro setting basically sucked at normal casting. The Mono setting was better, but still noticeable short casting. The PE setting felt like a nice smooth cast, but I was unsure of the distance compared to any other reel.
Next, to quench my curiosity, I spooled up a Revo Premier, which has been one of the longest casting reels for 1/4 oz and above that I've used, with my control line. Happy to say, I could cast nearly IDENTICALLY to the Scorp as far as distance is concerned, but I had to fine tune the mag dial as well as use my thumb diligently. The Scorp made the exact same cast with the dial on PE and needed absolutely NO THUMBING save when it hit the ground! I was then very satisfied with my purchase
The next day, I upgraded the bearings and tuned/polished up the Scorp's internals. Sadly enough, in the exact same casting tests, the Scorp showed NO casting performance gain at all!
I was very disappointed!
A few days later, I received the Metanium DC. It was very rough on the retrieve, so I broke her down, upgraded her bearings and polished her up
After cleaning, the Met is much smoother than the Scorp when cranking with no resistance. I can feel the tighter tolerances and better design all the way around compared to the Scorp. That said, once you add some resistance, the Scorp actually feels smoother
It is what it is..
So with my freshly spooled Met, I head out for testing. The first thing I notice is the legendary DC whine to my virgin ears. Pretty neat. Long story short, the first 3 setting of the Met (W, A, M) are nearly IDENTICAL to the Scorp 3 settings (F, M, P) respectively. The Met's 4th setting, L, for long distance needed some edjamekated thumbing for distance, but the distance is definitely there if you really need it. Makes me wish the Scorp had that one final setting just for kicks and giggles, and especially for pitching.
All in all, the DC systems/setting in both reels are nearly identical, save the Met's L mode, and I'm very happy with them both. They both cast identically distance-wise compared to the Revo Premier, which is an exceptionally long casting reel. With the newly affordable DC system introduced this year, I highly recommend trying a Scorpion DC. It's been a long time, and it feels nice to have a couple Shimano's back in my arsenal
Side note, the Scorp's spool weighed in at just over 17 grams and Met's spool at just a hair under 17 grams. The Scorpion as a whole weighs in at .4 oz heavier than the Metanium according to japantackle (I didn't actually measure their total weights), but in the hand, they feel exactly the same. The Scorpion DC is a HUGE value compared to the Metanium DC for nearly twice the retail!
These are just my "controlled" experiences along with my personal opinions. YMMV. Thanks for reading!