I bought an HP Omni 10 a couple weeks back at Office Depot for $350. I like it a lot. I bought a 32GB high speed Micro SD card to supplement the eMMC and got a Microsoft Wedge Keyboard (which doubles as a stand--NICE keyboard imo) and a small BT mouse. I prefer it over my netbook because the monitor is mobile (put it farther away from my keyboard) and it can do PORTRAIT mode which is far better for Word documents. The device is snappy. The new Atoms (Bay Trail, quad core Z3770) is fine for most desktop stuff. I have open: Word, Firefox with Zotero, Chrome for a couple websites, a PDF reader with a 300MB ebook scan loaded, an audio voice note recorder, and a native Windows research program and it runs fine. No GIU slow downs, either. The 1920x1200 (16:10 aspect, NOT 16:9) is great for reading books and the screen is vibrant with good viewing angles. The device is light and thin enough for a solid ereader and the fact it has real Windows means you can do full screen Amazon movies.
I am glad I got this over the Asus Transformer. The reviews note the build quality is better on the HP and after holding both I would agree. The HP has 16:10 instead of 16:9, a higher resolution screen, and faster Atom. And I think picking your own Keyboard is an advantage. The biggest complaint is the small 32GB of storage. 2GB of RAM, while not an issue so far, is on the small side.