3D Printing Hardware Kits
I am successfully printing with the 0.35mm J-Head Nozzle hotend for 3mm (ABS & PLA).
Check out some of the other excellent products and accessories at MakerFarm.com
I purchased and built/calibrated a 8" MakerFarm Prusa i3 kit, so far it's a dream to work with.
Another good piece of 3d printing hardware is a hotbed. A hotbed is good to keep your prints from cooling too fast and curling on the edges.
8"x8" Plate Glass for the Hotbed
It's good to put a piece of 8"x8" plate glass which can be found at most local home/hardware stores for a couple bucks. Usually it's 8"x10", and you just have to use some glass cutters to chop the unnecessary 2"
Kapton Tape - for glass plate, good for ABS to stick to a heated bed. Read more in the 3D Printing Calibration section on how to successfully laminate your glass plate with Kapton tape and have no air bubbles.
Blue Painters Tape - for glass plate too, good for PLA.
Assembled 3D Printing Hardware
These guys are cool, and are some of the first people to take the RepRap project and make a working reliable printer for a fraction of the cost... Years ago. And, this comes with support so, this is more of a prosumer 3d printing hardware level device. It's really nice.
Professional 3D Printing Hardware
If you can afford it, or have a budget for it.. These people are the ones who bought MakerBot. And, they're the inventors of Fused Deposition Modeling. So, they are pretty much the Apple of 3d printing hardware. Their Mojo desktop printer is just about the size of a desk, but it will print probably perfectly out of the box.