Ask HN: What is your biggest problem when buying a new device

Hello HN, we are working on a new app, moblivu, which will make information about consumer electronics way easier and elegant.

Basically we are trying to resolve most of the problems surrounding a possible new purchase of a smartphone, tablet or notebook like:

-Confusing specification sheet -Difficult to navigate website -Back and forth between listing and product page to discover new products -Aided comparison and device search based on your needs -Links to review directly -Guides about technology (platforms, how to, etc.) and more

Most of these problems are a bit more for the general consumer, but running around Google, Engadget, Best Buy and YouTube to get information isn't that great even for a geek.

So I am asking you, what annoys you the most when you try to get information about a product or potentially going to buy one?

Thanks!