The PC version should be the best regarding image quality on a decent machine. Higher res, better texture quality (perhaps),
better anti-aliasing. However, performance wise I think the consoles will appear to play just as smooth at 60FPS. It's very hard, almost impossible as far as I am concerned, to notice framerates above a solid 60FPS.
Regarding the consoles... Isn't it still too early to tell?
Has it been confirmed that the PS3 doesn't have an optional full install? If it doesn't (I hope it does - man, it's my storage space, right?), I think the 360 full install version will be marginally better than the PS3's partial install, but only regarding the texture streaming (pop-up). Maybe a PS3 with a SSD hard drive would make a difference?

I think the differences will be fairly negligable, and I trust id to do their utmost to ensure parity across the platforms. I'll be interested to see the Eurogamer's Digital Foundry Face-Off, which is bound to be done for Rage.
To conclude - I think they'll be close enough for it really not to matter. So I didn't vote!
there is no anti-aliasing on consoles.
everything technical too early about consoles - so no way to get into arguments.
If you ask me - PS3 is the way to go but only if Sony will allow full install.
First of all you don't have disk swap.
Second you don't have HDD validation enforcement (which is a huge ripoff at 360) PS3 HDDs for same prices as for PCs
Third you actually have ability to use SDD for PS3 - 360 doesn't have velociraptors and SSDs for sale.
Essentially 360 "microsoft" branded HDDs are re-brands from Seagate and Western digital , the same thing - but they stick a different firmware on and set the price 300% higher - pure and clean ripoff.
So in the end even if 360 allows full install - many people could not use it - the game uses 22 GB so not even the minimal HDD is enough. And if you could use SSD for PS3 and be able to install there then i think the problem of blurry textures when in action could be negated or significantly diminished.
But there's always ways to do what you want - using your own HDD for x360 needs some expertiese - you need to flash the firmware - but this is not an easy process you can ruin the HDD if you're not following rules.
http://forums.xbox-scene.com/index.php?showforum=170