UIScrollView or UITableView?

I have a chat app which needs to save history (similar to the native SMS app).

Currently I'm using a UIWebView but due to performances issues, I want to switch to native controls.

The easier way would be to use a UIScrollView and just add a custom UIView for every bubble, but I'm not sure how will it work for long conversations.

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Assuming I have a long history, will UIScorllView perform well? My other option is to use a UITableView but it's an additional overhead.

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I should use a UITableView with a custom UITableViewCell wich holds the bubble.

Something similar is done in this sample project taken from this tutorial