Standing glute kickbacks is one of the best workouts for glutes and it can be performed on a kickback machine or leg extension cable machine or in a way to perform kickbacks on leg extension machine. (ninjatransformation.com)
I like to stay away from using the leg curl, leg extension machines at the gym as I believe you get better results from using compound movements that don't isolate specific muscle groups. (fitbodyhq.com)
Increased Muscle Recruitment: Exercises like squats and lunges, will use far more muscles than a seated leg curl machine or a seated leg extension machine. (best-leg-exercises.com)