leg presses for most people do NOT develope the thighs. People do them as an "ego" booster they can pile the weight on. Smh. When doing them make sure you push with your heels not the front of the foot. The heel actually activates more muscle. Do not go fast never lock out and go as low as you can. That might help. Here are ( in my opinion ) the best thigh exercises.
1. front squats or sissy squats
2. hack squats
3. lunges
4. regular squats
5. leg presses with weight ABOVE head ( verticle)
6. regular leg presses
7. leg extensions
For hamstrings
1. stiff leg dead lifts.
2, leg curls