I have the 27ix/270se combo, and have had the GNSC upgrade done on this. I have no regrets about it, and it is truly a reference/cost-no-object piece of equipment. It is truly mind-boggling, and it is still breaking-in after over 500 hours. The detail and richness of classical music truly approaches that of live music.
However, you should really consider the fact that upgrading your current player is much more economical. In fact, I think you would be very happy if you did the GNSC upgrade, the SE upgrade, got a really great power cord, a suitable platform/stand to isolate the CD player, and consider the Shunyata Hydra as well. Unfortunately, Wadia needs alot of tweaking and refining to sound its best. Even the 27ix/270se needed these things to be up to its full, jaw-dropping potential. Bringing out the full potential of your current player seems to make more sense to me.
However, you should really consider the fact that upgrading your current player is much more economical. In fact, I think you would be very happy if you did the GNSC upgrade, the SE upgrade, got a really great power cord, a suitable platform/stand to isolate the CD player, and consider the Shunyata Hydra as well. Unfortunately, Wadia needs alot of tweaking and refining to sound its best. Even the 27ix/270se needed these things to be up to its full, jaw-dropping potential. Bringing out the full potential of your current player seems to make more sense to me.