My take on it;
The '05 SEEG is great out of the showroom! Plenty of power, great suspension / handling, high quality leather seat, rider backrest, chopped tourpak. My mods are minimal, radar detector, street glide mirrors, K&N. (<$500)
The '09 SERG, requires much more, exhaust system, chopped tourpak, SE Stage III, shocks, fork cartridges, areo management, are just some of the mods I feel that are necessary just to bring this bike to the level that the '05 is stock. I know, that I could have got an Ultra CVO RG that had the TP and lowers, but chose not to go that route. 'Will have spent close to $10k for mods on this bike, not including hot rodding the stereo. And the seat is still "pleather" on this one...
The MSRP on both these bikes were about the same