I've got one but I only run a 6200, so can't be of much help on that front, sorry.
As for if they are anygood? Well I've not had mine set up for too long but I haven't had any problems so far. I'm using quite a basic spec (2.6 GHz Celeron D, 128mb 6200, 512mb PC3200 RAM) as its simply to play divx and mp3's.
My only disappointment is with the onboard graphics. It all works fine until I boot into the OS at which point my LCD TV says "out of range" so the signal must be quite weak. Hence the reason I am using the 6200 but when using an AGP card the instant on features don't work so to watch a DVD I still have to boot into XP, not a huge problem though.
I've got the one with the remote, and LED touch screen display which is pretty cool tbh BUT the display will only work if your using the ASUS Home Theatre software. Not a problem as I like the software. I've got it opening on start-up so I boot into a nice media centre type front end
The model without all the fancy gubbins is one hell of a bargain though and if your not planning on using the ASUS software might be a better bet.
EDIT- Didn't notice the date on your post
this is quite a slow moving forum
I don't know if the weekly special is starting or finishing tonight? Either way they are currently available at £5 off for the full fancy gubbins one or a massive £12 off the plain one (Damn thats a bargain, almost makes me want to buy another and get rid of this monster)