I want to know which application to use before choosing which to use.
I've searched it and this is what I've found.
Cydia: - Allows user to search App Store - More reliable than Rock - Crashes very rarely - Developers give back to community
Rock: - Faster than Cydia - Can download multiple applications at a time - Ten day trial for purchased apps - Ability to change interface using computer - Company just to make a profit
Which one should I use when I jailbreak my iPod. Also, do both offer the same apps or what? Are they different?
Yeah.... Avorne summed it up right there. So if you open the rock application, it will just say that they have merged with Cydia. So it wouldn't work...