HD computer/laptop monitors?

[Phatferd]

I hear all this debate between 1080p and 1080i on smaller screens. Most people agree that 1080p on sub 32" screens doesn't make much of a difference. So my question is this...

With these new HD monitors (1920 x 1080) on these laptops 16" and 18", is it really worth it? Wouldn't a 1080i resolution on something that small look just as good? I'm asking because I don't want to overspend on an option that really isn't worth it. If I could save about $300 by going with a smaller screen resolution then I will, but I also want to be able to watch Blu-Rays when I travel in the best options available.

Thanks!