I had an S5 before my turbo and the turbo is much better. 80% of that is the much bigger battery (lasts a day and a half, vs half a day), 10% is nearly pure Android (instead of f'd up Touchwiz), 10% is the intelligent little features that really work like twist for camera and wave to see notifications (without sucking the battery dry). As far as the other things where the turbo beats the s5 (cpu performance, screen res, camera res), I don't really notice the difference.
P.S. Before the S5 I had a note 2, it was an excellent phone, but a bit bigger than I really wanted. That's why I didn't consider a note 4.