# Deriving from Sprite as oppose to leaving it as MovieClip?

**URL:** <https://forum.kirupa.com/t/deriving-from-sprite-as-oppose-to-leaving-it-as-movieclip/326206>\
**Category:** flash\
**Created:** [November 29, 2011, 2:15pm UTC](https://forum.kirupa.com/t/deriving-from-sprite-as-oppose-to-leaving-it-as-movieclip/326206 "2011-11-29T14:15:33Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![rei\_flash](https://avatars.discourse-cdn.com/v4/letter/r/ecc23a/32.png) [@rei\_flash](https://forum.kirupa.com/u/rei_flash)\
**Post date:** [November 29, 2011, 2:15pm UTC](https://forum.kirupa.com/t/deriving-from-sprite-as-oppose-to-leaving-it-as-movieclip/326206/1 "2011-11-29T14:15:33Z")

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I needed to group some simple geometries into a symbol in order to use it for hitTesting;  
And I think making them to derive from Sprite class is be better in performance than leaving them as from MovieClips?

But then I have no need for setting them “export to ActionScript”.

So which way would be better performance-wise?  
exporting to AS and derive from Sprite, or just leave them as MCs ?

Thanks!