We just played around with Viliv's latest MIDs, the stylish S5 and X70. Both devices use haptic feedback for onscreen keyboard input, and despite the resistive screen we found them both to offer some of the best touchscreen interaction we've seen on devices like this. They were both running Windows Vista, and seemed rather responsive and usable, even with Atom under the hood. What's really impressive is the X70 (pictured), which is thinner than the S5, and also can be mounted to an optional leather case that brings a keyboard and foldability to the device, and turns the unit into a laptop of sorts. Neither device is particularly thin or light, but there's a lot of quality going on here, and for folks sold on this sort of functionality and form factor, it would be hard to do much better than these at the moment -- of course, you'll have to swim to Korea to do it. Video of the S5 is after the break.