lipo transmitter pack charge current question

[mart3pop]

i just got lipo packs for my 3VC (thanks Jonas !)

these : http://www.rc-book.com/en/battery/tu...er-lipoly-pack

what charge current should i choose ? my searches didn't bring anything up.
i used to charge my old NiCd's at 0.1A...
it says 1C max but isn't it better to charge it "slower" ? like 0.5C for example since the idea is to have the slowest discharge possible ?

thanks !