Classe Omega vs Delta

Did anyone compare the 2 lines? I have a chance to pick up an entire Omega set up (monos, preamp and SACD player) for more or less the same price that I can buy new 800 preamp, CA-M600 monos and used Esoteric-03 CD player. I plan to drive Tannoy Kingdom 15 speakers which look easy on paper (8 Ohm, 91 db) but due to their impendance dropping below 3 Ohm B&W style they are as hard to hard to drive (McIntosh 452 fails miserably) as B&Ws. Hence the choice of big Classe amps. Any ideas?