The DTG PRO P600 EVOLUTION:

Precision linear rail system (sturdier and more stable then wheels on rails)
Powder coated professional finish base that is light and stable
Eject/release button to release Printhead for easy maintenance and wet-capping
Precision base with Printer connection grooves for stable printing
One central connection point for power to base and printer, no need for multiple power supplies
Front printhead marker guide to prevent damage to printhead from plate collisions
Large Refillable Cartridge system for fewer fills between prints
Non-Slip print plate keeps shirts and garments ultra-stable for sharp printing
Ultra Stable Base with printer locking mechanism for stable printing
Removable and easy to adjust print plate/platen so you can change out for smaller sizes (baby / toddler / onesies and other smaller garments size plates are available for purchase and easily interchangeable)
Plate spacer system to quickly adjust to thicker garments
Modular design (minimizes downtime if you have an additional backup DTG printer)
Includes Design Software with Manual and video Tutorials
LED lighting for viewing prints clearly, as they print
Larger printable area (12.5 x 18 inch)

This DTG PRO P600 FUSION™ has significant improvements and enhancements over the standard DTG PRO P600. These enhancements include:

Precision linear rail system ( sturdier and more stable base than wheels on rails)
All-encased design
Front printhead marker guide to prevent damage to printhead from plate collisions
Large Refillable Cartridge system for fewer fills between prints
Removable and easy to adjust print plate/platen so you can change out for smaller sizes (baby / toddler / onesies and other smaller garments size plates are available for purchase and easily interchangeable)
Plate spacer system to quickly adjust to thicker garments

Includes Design Software with Manual and video Tutorials
Video of P600 printing
https://www.dropbox.com/s/a94z9eu69kuwugd/DTG_Pro_Evo_TSHIRT %283%29.wmv?dl=0  

DTG PRO P640 EVOLUTION (differences as compared to the P600 above):

Open access printhead
Easily removable Printhead
Lower cost replacement printhead ( compared to P600). P640 : $250-$300 vs $500-$550 for P600,

This machine has the same speed as the P600

P640 carts are smaller than the taller P600 carts, but are also less cost to replace ( we recommend annual replacement, due to gunking up)

CISS for P640 is an upgrade-able low cost option.