i want a buy my first MC, MC252 or MA6600 ?

Hi, i want buy a MC machine.
(my first MC)
i see MC252 (power) and MA6600 (integrated)
i have a pre bryston 11B.
Pre MA6600 is better than my pre bryston ?
i think i can use my 11b + MC252
MA6600 is better than MC252 ? (quality sound)

thank you, im sorry for my english.,