best 2 channel system for the budget. Kef,Dyn,MA

After extensive research for a 2 channel set up for a 12 x 14 room i am considering;
1-Kef ls 50 or R100
2-Dynaudio x12
3-MA RX2 or RX6.

1-Anthem 225
2-Yamaha a-s1000
3- Harman kardon 990.
Any experience with this combos would be very helpful.Looking for a neutral and clear set up,mostly acoustic music, vocal performance is very important.