The 'EDGE' brand is relatively new....I think that its an off shoot of 'Vibe' & 'Fli', as in another series from the same people....
If you can demo one before purchase & it meets your needs then I can't see an issue....BUT, your not going to be able to research long term reliability....
I would also tend to avoid the E-Bay sellers, just creates hassle if warranty work is required....
I would look around for older JBL GTO series amps etc as an alternative, these have a proven track record & latest prices seem good vfm....