Looking at iGen 4 or 5 (150). Both used, 5 less so. What is the learning curve from an older digital press ? Brand withheld. I know some love it, some hate it, i respect that. Which machine is more reliable ? If that question can be answered... Is there a reason to go with the 5 from a quality perspective ? Very interested in the 26 inch sheet ability. Is this capability reliable from a register perspective ? Thanks for your thoughts on this.