2nd interview tomorrow and I need help

So I have a second interview tomorrow, but I don’t want to make a rush decision without going over what they have to offer. At my current job I have really good benefits and my wife is on my insurance, so I would like to make sure it makes sense for me to change jobs.

Could you give me some ideas on ways I could put this into words? I was thinking of something like “ thanks for the offer, but I would like to review it and I’ll give you an answer within the next 24 hours” ? But at the same time I don’t feel like this doesn’t sound good. It’s like I’m not that interested. Any ideas?

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