Pros: size, all-in-one design, price
Cons: NEC future support, extended warranty advised
I bought the Z1 about four weeks ago as a kitchen internet appliance for the family. Having researched this product and its competitors (Acer, Gateway, Sony, Compaq) I was well aware of its benefits and shortcomings.
However, for the user with modest expectations, the Z1 represents excellent value. It has a small footprint for those where space is at a premium, and the wireless keyboard is ideal for when you want to get it out of the way and throw it in a drawer although it could have benefited from a wireless mouse instead of the bundled USB version (the keyboard had a problem with sticking keys, however this was solved by spraying it with a multi-purpose silicone spray to reduce friction between the plastic parts. Works great now!)
Following the restructuring of NEC and the discontinuation of the Z1, there are now some great deals available. My Z1 was purchased through a Radio Shack outlet store for about the equivalent of $1,200 US or half retail prices. The XGA flat screen TFT is worth at least as much. The all-in-one includes 450 P3 with 96 MB SDRAM, 8.4 GB hard drive, DVD/CD Rom, several USB ports, an infrared printer port (although awkwardly located on the left side where it won't work with my Canon BJC-80 portable), PCMCIA slots - ideal for digital camera flash memory cards, 56K modem.
Unfortunately, the NEC Z1, being discontinued is getting harder to find. In fact, in Ontario, I think there were just 5 left. It's a shame because for the user with modest expectations who needs a space saving computer at an excellent price, the NEC Z1 is a value that's tough to beat.