Many entrepreneurs are great presenters who can energetically sell their idea/vision to a group of investors. That was meeting 1, and you are invited to meeting 2 with questions about the practicalities of your business, how you are going to approach the market, how are you going to charge for it, where are you going to invest the money you are raising in.
Coming back with a slide deck that sells the vision (again) will not score you any (additional) points. There is also no reason to invest in (a professional presentation designer who designs a) a spectacular-looking slide deck that shows your budget. Investors know you can sell, they want to know that you can run a business as well.
In fact, boring slides can be good in meeting #2. Here are the options, I have thought about it, and I pick option number 3. Nobody knows whether option 3 is the right one (things change quickly in a startup), but at least they see someone with a cool, calm head who makes sensible judgement calls. She can be boring when she has to be.