Yeah it depends on what you are using it for, but if you do need 750W (mid-high SLI/Xfire setup) then it's a very good PSU.
As for value, Seasonic are rarely going to win the best price, but it's still a good deal.
Other slightly cheaper options that still offer 80Plus Gold and modular cables -
Rosewill Capstone M 750 - $120
XFX Black 750 - $130