Depending on the size of your CD collection I would suggest you go for the 270/27 solution and you can alway modify THIS combo later. That's exactly what I did, being not interested in any new formats at all owning 4000 CDs and counting. I agree to Rtn1 re the tweaks which actually can shoot a Wadia to the stars. Try the PS-Audio PS300 PowerPlant with the new MultiWave upgrade for example. It's simply unbelievable what this can do for the 270/27 combo. I would not spend four digit numbers on mains cables, though. Go for the DIY Belden instead - I compared that to the Shunyata and others. The PS-Audio does make much more of a jump ahead. So in short terms: if you rely on the CD format go for the Wadia combo and you're "high end", in the word's sense.
Good luck!
Good luck!