This is a very premature first inkling of a comparison: I got my Archos PMA430 three hours ago, so don't expect indepth stuff yet.

First impressions:

- Well, the screens are obviously no comparison: Nokillo has this gorgeous 800x480 pearly white screen while poor Archie (yes, I name my gadgets. I admit it, I am thàt sad) has to get by with a simple 320x240 QVGA thingie. Archie's screen is nevertheless quite good, with clever adjustment options (some of which I don't understand, but they obviously do something). For movie playback, Archie's screen is quite acceptable, although Nokillo (OK, it's like this: "Nokia" + the "leet" version of "770". Got it?) has the advantage of that wide screen. I prefer not to letterbox my movies, so there's bound to be less black on Nokillo.

- Wireless option appears to be a clear victory for Nokillo. Although Archie has (surprisingly) WiFi on board, it's only the slow and less glamourous version of it. Archie's reception is also a lot worse than Nokillo's, giving up when the 770 -- like the bunny -- is still sucking up those waves from the ether. No Bluetooth is to be found on Archie's person either, although see below...

-Wired connections. Here Archie clearly wins, but that was to be expected: Archie is supposed to be able to record video and audio directly from a non-computer source, for which it has a very clever connector on board (unfortunately, the connector comes standard only on Archie's humongous docking cradle. A "travel cable" has to be purchased separately for around 30 euros). Next to that, Archie has not one, but two (!) USB-connectors (both of the mini-variety, but adapters are in the box): one is a USB 2.0 device port (for connecting Archie to a pc and pump movies at an amazing rate through the pipeline) and secondly a fully functional USB host port (only 1.1, but it works out of the box! I plugged a USB keyboard in it and could start typing immediately). This USB port is reputedly also capable of accepting a Bluetooth dongle, so BT is not completely out of the picture.
I'm told Archie will even accept a USB-to-Ethernet plug, so there it beats Nokillo hands down (I have had the opportunity to really pine for such an easy option on Nokillo, when having to haul around a relatively big tablet just to set up a pc-fobic friends wireless router).

- Storage. I'm on two legs here. Obviously Archie wins, with that 30 GB hard disk under the hood, but I'm not discounting Nokillo completely: Archie has no slot for removable media (although there is of course that USB host port again) so, provided someone invents a 40 GB RS-MMC card, Nokillo could still win this one.

- Operating system. Hmmm... Archie has Linux, Nokillo has Linux. Archie runs an older (and reputedly stabler) version of QTopia, Nokillo runs the Hildon environment we've all learned to love and loathe. Both try to hide as much as possible of their innards from the unsuspecting user, but Nokillo wins here, because Archie was set up in such a way that, whatever a user tries to change (other than the obvious, like adding software), a reboot will bring Archie back to its factory state. Even the date is set back to some where in 2005!
OTOH, since april this year, Archie can be flashed with an OpenPMA variant of the OpenZaurus distro, while Nokillo has only Nokia's idea of an operating system. So again I'm kinda undecided in which of the two sucks most.

-PDA functionality. Archie has almost all of the standard QTopia PDA applets on board, and there's even a (highly unofficial and most likely illegal) version of HanCom Office floating around on an Internet near you. Nokillo, as we all know, has nothing and is even denying categorically it has anything to do with PDAs.
But.
There's that hard disk on Archie. It's great for storing video and music and stuff, but it really sucks for PDA things: it's like a Palm Lifedrive, only worse. Applications take serious amounts of time to start up, opening and saving files is really noticeable. Well, it's like having a pc in your hand, actually, with all the good (storage) and bad (lagging) that goes with it. As a "keep-it-with-you-for-looking-up-stuff" device, for my money Nokillo wins here, regardless what I wrote before.

That's it for now. I'll be back with more if I can be bothered, but as a general conclusion seems to be the way to round of these kinds of things, here's mine:

Archie is a great multimedia device and I'm already committed to using it as such (I've been decoding "From Russia With Love", with PocketDivXEncoder, as I wrote this article), but after a short test run I decided there's no way José I'm going to use Archie as an Internet tablet. Not after having been exposed to Nokillo. No sir.