That's a good price for the SC-05.
Unless there's an extra feature you want the SC-25 has that the SC-05 doesn't..
Removable Power Cord (SC-05 Non removable)
Multi-channel PQLS (SC-05 CD PQLS only)
Better iPod compatibility (album art etc)
48bit Deep Color (SC-05 36Bit)
Additional HDMI input on front panel (SC-05 No HDMI on Front panel)
One less Optical input. 4 optical inputs (SC-05 has 5 opt. 3 coax)
DACs, Amps, Power, and weight appear to be the same.
If you're happy with the SC-05 and nothing is missing, and you get the full 2 year warrantee... I'ld go for the SC-05
Both are good.. go with the one that puts a smile on your face.