i've owned both.the supreme is lighter and smoother.the 4000 size shimano weighs 14.1 oz. the supreme weighs 9.6 in the same size.that's 4.5 oz of weight.
The Supreme also has a magnesium frame. Why not mention that? :
Having owned two Supremes (one that was fished for five months and blew up, Pure Fishing sent me a new replacement, it was immediately sold), I know what they are.
and what about all the shumbindo stradics and symetres that bound up when wet?shimbindo never admitted there was a problem.it is well known on the internet.i know many ex-shimbindo users who switched to diawa because of this after getting no satisfaction from shimbindo. any manufactuer can build a bum reel.at least pflueger sent you a new reel.shimbindo left a lot of guys out in the cold and told them nothing was wrong.i give the superior customer service to pflueger on that one.