I bought one of these a number of years ago that was second user but had the screen replaced... otherwise like new. The interface, like a lot of rack effects tended to be a bit of a pain but once you get 'your' effects stored then it all becomes a very powerful device. These are not cheap even second user. At the time there was no editing software to my knowledge, so I simply worked with the buttons until I had it sounding great. There is adequate IO on this device and easily controlled once you get those presets as you need them.
Actually, this device made me buy the Eventide H9... but while the fully loaded H9 is a bargain AND has editing software it's harder to control once its sitting on the stage... so the Eventide Eclipse I found better re controllability - but the effects were very similar.
I also have a H7600 which cost substantially more but overall is a better product if more suited to the studio. The Eclipse I had was V4 software and I believe as I write the same version applies even now.
The unit is very well built and I have no hesitation in recommending this unit. The first track on my 'Gravity Waves' album (with the same name) used a guitar, an eventide Eclipse and an DI in to a desk - the resulting stereo sound was incredible.