I have never seen a 3-4 pc blank in a catalog that was not (allbeit slighly) heavier than its 2 pc counter part. There has to be a difference in taper of multi pc rods because of the ferrules that will result in a difference in the way the rod cast...it could cast better but there has to be a difference.

If I like a rod the number of pieces it has is my last consideration.

I have rods of 2-3-4-5-9 piece....I love um all. I only have minor thoughts with any of um...multi piece and their smaller package make them easier to transport...I also like a rod that breaks in the middle...2-4 pc etc.