Looked at Knockout v. angular some time back. Couldn't really decide between them - I think the deciding factor in the end was simply that there was someone on that team who was familiar with angular (admittedly, not the best reason but there wasn't much to choose between them).

Seems to me that although Knockout promotes itself as MVVM and angular as MVC they both provide pretty much the same functionality.

>If you want MVVM, then once you learn MVC, learn how to apply Knockout.js.
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>>I sometimes wonder whether a MVVM pattern would have been better - but trying to compare the two in a web context makes my brain hurt :-{