Re: (Nutaku) Milenium War Aigis (English Version)
Never use a Premium unit as XP fodder(unless you're a whale), especially considering the fact that you can get Rainbow Crystals for dismissing them on the DMM version. The only times eating Golds was an option is when there were XP bonus Events for eating them, I'm not even sure if anyone on DMM will still eat them up now considering the aforementioned Crystals. Eating a Platinum is insane.
Sherry offers one very big benefit: Her AW ability boosts the HP, Attack and Defence of all units at Gold or lower rarities by 5%, which stacks with every other AW ability since this one's unique so you could tack on an extra 2% Attack from Aria for example. Her Skill AW's pretty awesome too, it has an initial form where you activate it and Sherry becomes a 0-block, non-attacking unit for 15 seconds, then it swaps over to the real thing. 25 seconds of 1.5 multiplier, attacking up to 5 targets anywhere around her at a range of 250 which is just a tad under a CCed Archer's 260, switches back to the first skill after it ends.
If you don't have a lot of Premium Platinum+ units you use often, Sherry's an extremely good investment and will serve your team well, even if you have both Lilia and Claudia.