I've had one of these since a couple of days after they came out. I am madly in love with it. I paid about twice this for the tablet + case, and I don't regret it.
I have a laptop, a netbook, a DS Lite, etc., and it's the Vizio tablet that I take everywhere. I'm thinking of buying one of these as a spare, just in case I drive over mine or something.
When I got it, I had been looking long and hard at the other tablets on the market. The 10" tablets (iPad, etc.) were all too big for real portability, in my opinion; this goes in everything. The 7" tablets, on the other hand, had the wrong form factor; they were like overgrown cell phones, not tablets. And besides, they were too small. The Vizio tablet hit smack in the middle of my tablet sweet spot.
I thought about what I wanted to do with a tablet: some Web browsing was the big one (very useful on the road), communications (there's a lot to be said for being able to run AIM in a motel room, or a McDonald's), taking notes, a bit of light document editing, and a few handy apps like calorie lookups, etc. It does all that very, very well. For my fellow World of Warcraft players, access to the Auction House is remarkably handy. And I've noticed that it's become my primary Pandora device, mostly because I can just pick it up and take it to another room, unlike the big computers. The speakers are remarkably good for such teeny speakers; then again, I grew up listening to transistor radios, so anything portable sounds awesome by comparison. I'm a website designer, so I have the Gallery full of screenshots of websites I've done, and it's great for showing off to unexpected clients, like talking with a small store owner and finding out he needs one ... "here, I'll show you some examples." I can credit this tablet for at least one website sale.
I'd like an Android upgrade, and Vizio said when this came out that they were planning to put Honeycomb on it, but I'm a geek; in practical terms, and for most people, there's probably no reason why it matters all that much.
Using the WiFi tends to use the battery faster, but I've been quite happy with the battery life. It's good for hours of use, and will stay charged in sleep mode for days.
And yes, it does work as a fancy TV remote. I like regular remotes better, though; they fit in cup holders.
I love this tablet, and I've never regretted buying it (at $289, by the way, and another $40 for the case). Even if I'd known about the price drop, and then this one, I wouldn't have changed a thing.
Oh, buy.com has suitable styli for something like seven bucks for a 4-pack, free shipping, and I just stuffed a cheap micro-SD card in mine, though if you've got a MicroCenter near you, get one of their store brand ones from the little bins at the registers.
Oh, and it's just fine as an ebook reader, though I have a dedicated one (Sony 505) as well, and prefer the eInk screen (for those who don't know about eInk, it's a black-on-white reflective screen, and much easier on the eyes than any LCD). Also, yes, it runs Angry Birds.
In short, it's a sweet little tablet, and you should get one.