The 60e is worse. My truck is on it's third oneI have gone back-and-forth in vehicles with 4 and 6 speed slushboxes.
Simply put, if you want to wake-up the Silverado and make it much more enjoyable to drive, consider looking into a 6 speed swap.
Sure, the 4 speed 4L80E / 4L85E has a reputation good durability, but it simply holds-back the motor.