I am considering purchasing a production inkjet press. Should I use a 3:5 ROI return model, or 7:10 year model on production inkjet since many of these devices tout the fact that they can be upgraded in the field?

Although with offset presses 7-10 years is generally the norm, production inkjet presses are still digital devices and should be treated as such, thus we recommend you use the shorter ROI model. With today's rapid technology changes and advancements, how many digital devices do you have on your facility floors that are older than five years? Even if the production inkjet solution you select is field-upgradeable, you'll probably want to do this within five years post-purchase. As with any upgrade, there will be costs associated with this process and you will have to factor this into your ROI considerations.