Well, after four weeks of using the HP Officejet Pro 8600, here is my conclusion: high-quality parts, wireless connection, clear menu display and it's amazing at conserving ink. I would say it does close to three times more printing than my last printer. Easy to use step by step instructions, for setting up the printer. If you're at all familiar with an HP product, it's a breeze. If it's your first HP printer, then just take your time through each step. Menu navigation is excellent; just remember to use the swipe movement on the touch pad. The scan-to-email function without your computer is simply fantastic! The paper tray upgrade option is great if you are someone who goes through lots of paper. I have to say, I did find it a bit hard to find a place that had the tray in stock.
The cons of this printer are the drivers; they were not that easy to install. It took me two attempts to have them install correctly on my PC. Mac, on the other hand, installed it automatically, when it discovered the printer (yay for Apple). The cartridges are expensive, but the usage is minimal.
Wireless connectivity is still, for me, the biggest selling point. After the initial set-up, the HP Officejet becomes your own printing hub. I have sales people come in with their computers, showing me their latest products. For them to just be able to print without installing any drivers is great. There is nothing out there like this printer at the moment; as of right now, I would highly recommend the HP Officejet Pro 8600.