Should I be concerned about the latest SLA hardware?
With all equipment it's not just the original capability that is an issue but how it is installed, maintained, and run. Even the latest technology can build parts that are not fit for purpose, if badly looked after.
The picture below shows the difference in part quality between the latest iPro and an SLA 5000. The primary visual differences are in sidewall quality and crispness. If you are interested in more comparisons have a look at www.finelineprototyping.com/ourProcess/compare_main.html
This is one of our associates who has spent a lot of time putting together a means of visually comparing surface finish, edge detail etc.