SSD game loading will be faster compared to HDD, but I doubt you will see any difference in game play once the level has loaded. Maybe certain games that load during game play may run smoother, but other than that no real benefit once the level has loaded.

What SSD? You will be hard pushed to notice any difference between different SSD's in real life. Go for reliability/ price. If I was buying now it would be between the C300, M4 or 320 Intel.