Each previous nexus device has been a small incremental update. The nexus one had a 1ghz cpu and an amoled screen. The nexus s had a little bit bigger super amoled screen and a bit faster 1ghz cpu. The galaxy nexus had a HD super amoled screen and a dual core cpu. None of the sequels were actually noticably better or faster than the one before. They were all really good phones, but they weren't anything "amazing". It also seemed that they were always a generation behind in the specs department. The cpu's weren't cutting edge, the displays were of the lower quality of the spectrum, the cameras have always been complete crap. The designs were just clones of other devices on the market: The nexus one was the same design and form of a Droid Eris. The nexus S was a Galaxy S with a curved screen. The Galaxy nexus was a Galaxy S2. None of them were truly innovative designs that stood out in the crowd.
This brings me now to the Nexus 7... There was nothing on the market like it. Yes there were several 7" android tablets, but none that it shared any similarities with. The design is unique, minimalistic, and very durable. Also nothing could match the specs of it at the price it is. It was the first truly original nexus design, one that was pleasing and stands out against everything else in it's class.
Next up is the Nexus 10, once again it's design is completely unique to it's form factor. It isn't a clone of any other of Samsung's 10" tablets. It has curves that no other tablet has, it's made out of a material that is on no other tablet. It is a solid and sleek looking device. And lets not forget the absolutely phenomenal screen resolution on this device. Retina? Nope. It makes retina look like an SDTV. There is no equivalent to even compare its to. It's in a class of its own. Samsung and Google spared no expense in the spec department. The absolute first device sporting an ARM A-15 cpu, and it's Samsung's own Exynos design. This tablet is an absolute MONSTER. It is the fastest mobile device EVER. Nothing on the market in Android's corner or any of their competitors can even come close to the power of this tablet. This is really the first serious 10" tablet that can take the iPad head on and beat it in every category. Google did it's homework with this device and unleashed a MONSTER.
Finally, the Nexus 4. Sleek, beautiful, stunning, polished... Words that have never been used to explain the design of an LG phone... I didn't quite think that LG had the capability of creating a device worthy of the Nexus name, especially not a Nexus phone of this quality. I think they surprised the whole world with this one. Glass, beautiful glass. This is the most classy Android device ever put on the market. Not just the most classy phone, the most classy device, period. The HTC One X is a beautiful device, so is the Galaxy S3, but neither of these phones can even hold a candle to what LG has achieved in the design category. Did I mention how beautiful of a phone this is? This phone isn't just a step forward in the right direction... It is a leap, not a leap across a ditch, a leap from one continent to another continent over a humongous ocean. This device deserves the Nexus name more than any device before it. It had taken everything that was good in the previous nexus phones and polished every aspect. It took all the shortcomings of the previous nexus phones, chewed them up, spit them out, and flushed them down the toilet. This is the perfect phone. Once again, Google has unleashed another beast of a device. Housing the fastest, most cutting (bleeding) edge technology available, upgrading upon every previous spec in the past nexus phones, and giving it a layer of polish that is next to none. This phone will not soon be beaten. They nailed it this time. Every shortcoming of the Galaxy Nexus was addressed, modified, tweaked, improved upon and optimized.
I'm very proud of what Google has brought to the table this time around. They have been listening. They have been studying. They have been doing their homework. They have created devices this time around that aren't only competitive, but that have actually raised the bar so high that every single partner and competitor now has a LOT of catching up to do.