I have one, I like it very much, I installed the Honeycomb beta and this way its very useful to me. (I did lose Netflix, but hopefully soon the official Honeycomb will be out, Sept. I heard...)
Most of my content is on a 4TB NAS system so the AppleTV is only really useful to me with XBMC (which requires hacking) the Revue is more "open" in that I can run a DLNA streamer on my iMac and stream everything to it (I use MediaLink which I originally got for my PS3 but it works great for both!). The Revue also plays a ton more formats out the box.
I also like never having to switch inputs, the Revue goes in-between your STB and the TV so you just hit a button and the search/web is up. Plays flash content and streams a million sites. If you have a PC handy (I do, and love this part) Install Playon.tv and from the Revue bookmark gtv.playon.tv This will give you access to just about every online site (NBC, Comedy Central, Netflix, etc, etc.) Very slick and very useful since as I mentioned I lost the Netflix App but I can use this for now so I still have it.
I still love the Apple TV don't get me wrong, I have a ATV 1 with XBMC and a CrystalHD card, I have a ATV 2 with XBMC, I have a Logitech Revue (had to try it out once the price dropped) and I just got a WD Live TV Plus for my Master Bedroom (didn't have HDMI on the older Flastscreen so Component 720p does the trick) the WD has an UGLY interface and no built-in WiFi, but an $10 adapter fixed that. It does netflix in the bedroom and Streams from the NAS (also plays every format I have thrown at it, even high-bitrate 1080p with 5.1 sound) so I am happy even if it is ugly to navigate