A client asks you what's best, and you tell them. So far, so easy. The 'ideal' is both hard to define, and similarly, hard to get wrong. If its a car I could offer you a high-end Merc, or a a high-end Lexus. It doesn't have to be precisely the right thing, because most people aren't going to buy them.
So what's the next best offer?
This should now be a much more carefully crafted pitch. It can be because the ideal offer should have given the client the framework in which to give feedback. They can't afford that, okay, now what's the budget. Now I know, what's the tradeoff you want to make - ditch seats and keep speed - or keep space and prioritise economy?
Do you have a good system for figuring out next best?