Paint chip removal recommendation ?

Hi,



I have just noticed there is a paint chip (about 1cm) on my E90. What's the best DIY option to get that fixed ?.

Has anyone used Chipex (http://ift.tt/1s60txK) ?. Looks easy enough to apply. Or am I better off getting a touch up paint from the main dealer ?.



Colour is metallic blue.



Thanks for any info/suggestion.