What is better to protect a cell phone?

I have a samsung blackjack II and want to buy some type of cover to protect it, so what is best, a hard plastic clip on case, a glove, or a gel cover? I have had the gloves before on my first cell phone but have not used one since then (about 10 years ago) but since this is a "smart phone" i would like to protect it, As i have not used the other 2 i don't know which is best