Its just the design of the rod really as most zziplex rodsare designed for pendulum casting if i pick a zeteque txl up if feels ok to me as i am not bending it in the butt were as someone like cod magnet who does bend them and other good casters say there really stiff. Its all down to personal preference i like harrison rods and century some lads like greys sonik zippys dont buy the badge buy the rod. Try some before you buy if you can is my advice especially zippys. with century rods you can cast a rod buy it out the shop and it will be the same feel. For mixed ground fishing alot of people like the century ss .not my type of rod but very popular. Dont buy a rod just on recommendation alone as often you will be left out of pocket and let down.