the specs differs slightly, so it depends on what u ultimately want, performance or battery life?
9360 has a higher screen resolution with a 5 MP camera. Most carrier preload it with OS7.0 (so depending on ur carrier u would need to manually update it to 7.1 if u want hotspot feature).
9320 has a lower screen resolution with a 3.2 MP camera. BUT it has a bigger battery (1450 mAh vs 1000 mAh) giving longer usage. It comes preloaded with OS7.1, a bonus feature that i didn't see in my 9360 is the FM Radio app.
I can say with experience, I've used both curve and preferred the 9320 because of the better battery life.
Hope that helps.
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