Usually my cat has wet food, she's been having Tesco's Premium Supermeat recently, I tried her on Whiskas but it didn't agree with her, and she turned her nose up at it after a day or so. Then yesterday I received a free sample of Purina One Natural Balance biscuits, and she's gobbled it up. I bought a small bag of Purina One today and she seems to still be enjoying it, so I've been looking at other dry cat foods - My thinking is that with dry food they'll be less waste (she won't even consider eating wet food a few hours after it's been put down as it dries out) and because of that I'll be able to leave some food down for her whilst I'm at work should she get hungry, rather than making her it at set times which I'm pretty sure is unnatural for cats.
Anyway, I'm currently tied between Iams and Hills Science Plan. Does anyone have any idea which is best? Or is there another that they'd recommend instead?
Thanks in advance.
Edited to add: She's an old cat, about 17 years old.