Which Cricket Phone should i get?(Plz read description)?

[C-Los]

Hi, It's time for me to upgrade my piece of dinosaur..(the first samsung messenger)..Ive looked at two phones, the Sanyo ZIO by Kyocera, and the Blackberry 8530...i dnt know much about smart phones since iv'e only had one phone for like 2 years lol...so what do u guys recommend? im in to apps, like facebook, social apps,music nd especially games! but also helpful in school, work? Thank u