I've held strong with just my clunky ol' iPad 1, but it's time for an upgrade. My biggest gripe about my ipad is that browsing the web is really slow (I only use my iPad for web browsing, Kindle, and the occasional YouTube video). Would I see a *notceable* upgrade in the Mini? I love the form factor, but if the speed isn't significantly better I may just go for the iPad 4. Thanks for the input!