Re: (Nutaku) Milenium War Aigis (English Version)
Monica/Thetis/Betty/Iris (not in the list) > Bernice > Saki > Victoria > Katie in my opinion
It really depends on your team though.
Monica: If I had Monica she would have been one of the first units to awaken. DCs are the only ressource I'm lacking at the moment. But she doesn't really increase the strength of your team right now, she's more of a long time investment. Your choice, if you are happy with the strength of your team right now, I'd go for her first
Betty: Pretty much the same as Monica. If you feel your team is strong enough, but you are lacking Gold and are willing to farm maps with her: go for it. I personally did not awaken her and don't plan to do so in the near future. I have 7 units awakened and still 4+ mio Gold and I would not want to farm pastoral gate: It takes too much time and decreases the amount of exp I get.
Thetis: Great duelist. First unit I awakened. Partially because I like her, but I use her quite often and the resistence to poison and paralyze is another great selling point. Depending on the strength of your other duelists she might be a good choice.
Iris: You didn't name her, but I'd advise to awaken at least one healer (negative status reduction and her heal when placed comes in handy). Furthermore you don't really need to invest a lot into her, AW30 is enough.
Bernice: This one depends heavily on your playstyle. I, for example, use HAs almost never, despite having Bernice and Gellius at max level (I used the latter exactly twice). I like Anya a lot more and most of the time I'm fine by replacing HAs with her. If you use them frequently she's a great unit to awaken
Saki: Cost reduction and increased attack speed are a big deal for her useabilty. Furthermore her stat increase after awakening is barely noteable, so you don't necessarily have to invest into her a lot. It really depends on whether you like her or not though. She is definitely replaceable and I wouldn't say she is a high priotity unit, despite the benefits for herself. I personally did awaken her, because I like her and used her a lot even before awakening. Therefore I really wanted to awaken her. Despite that she was only the seventh unit I did awaken, so like I said: Not that high of a priority.
Victoria: Not a huge fan of her. I guess she is okay and if you really want to and/ or feel the need to have a second awakened archer you can awaken her. Honestly I'd prioritize other units. For me She's still at CC61 and rarely used
Katie: I wouldn't bother with her. Aria is simply better. The 2% defence is a nice bonus but... meh. For me she's not used that often and will be replaced with one of the plat event soldiers or with awakened Shuka, when the cost in the beginning of a map is not too tight or when we get her cost reduction buff, whatever happens first