I like the design of the Vizio AIO...and other than 2 problems for me (no OSX and no HMDI out) I like the 24".
Well, the website layout sure seems familiar...but I like that it's equally clean.
I really would like the next iMac to be 24" vs 21.5" and I don't mind $1200 vs $1050 difference for the equivalent Vizio (CA24-A1). For $150 you get OSX, TB, FW, etc. Well worth the price.
Vizio did a lot of things right...like using MS Signature with no bloatware. I like the computer in the base and the chinless display as well. I'm guessing that it's more easily expandable than having the computer behind the display. The only thing I dislike is the lack of outputs. The two passive HDMI in are great but 1 input and 1 output would have been better IMHO. Toslink out would have been useful too.
The two 27" models are not directly comparable because the Vizio is at 1920x1080 vs the 2560x1440 of the iMac. Although I have to say that a 27" 1080p monitor is quite usable...especially if it is going to double as the dorm room TV that's also connected to the XBox and PS3/BluRay player (hey look...2 HDMI ins...).
Very tempting. I'm getting more and more impatient for the iMac update and I can imagine quite a few Vizio sales to college kids. The top end 27" model needs something better than the GT 640M LE though even if they needed to bump the price significantly.