magic penetration or mana per second runes on Lux?

[quote=Fraba]I've been told that magic penetration on Lux is somewhat redundant and that you don't need it until late game. I've also heard that a void staff + magic pen. boots is enough to handle any situation. Therefore mana per second would seem more useful. Me being a nooby and all, Im lost at this fork. So i was wondering if any veteran Lux players could share their views on which is better so I can roll that build. Much appreciation for any help Love, Fraba[/quote]

[quote=PotatisFarfar]Only red runes and maybe quints can / shuld be Magic pen.[/quote]

[quote=The_Nameless_Bard]I actually have both. I have Mana regen seals, Magic Pen marks, and AP/level glyphs on the page I use for Lux.[/quote]

[quote=Searz]MrP marks, MP5 seals, CDR or AP/lvl glyphs and HP or AP quints.[/quote]

[quote=AnIh]like searz said basic mage runes[/quote]

[quote=The_Nameless_Bard]I'm the weirdo who uses utility quints because I like them. Extra movement speed? YESSSSS!!!!!!![/quote]