I love pricespy when I'm looking for tech stuff. You can filter all the available things in the category and ignore all the other stuff that doesn't meet your requirements.

I use it all the time when looking for phones and other things, like components for my new file server that I am planning on building.

It also lets me keep an eye on the price trends of the products I'm interested in, and there is a massive range of products on the site. From CPU's to washing machines.

Price spy -> mobile phone -> Android 4.0 filter applied: PriceSpy; Android 4.0