I have M.L. Quest Zs with Krell amp & cd. I have had Sonic Frontiers Line 1,2,3 in my system with excellent results. All are listed on this site for less than 5K. I am now using the Line 3 & sold my Line 1 to a friend who has a pair of Sequels powered by a Krell amp. The Line 1 is excellent value for the dollar, the 2 has a bigger soundstage & the 3 has all the above plus bass to die for. Good luck in your decision.
