I use a system of two satellites plus two sub 12A NX NX S 25 A with two 15 "for 10 months
The accuracy of the vote on the heads is impressive and the scope, substance send the "ball", the whole is harmonious with a high efficiency while maintaining accuracy rcf own systems.
For about 8000 euro all, this system has nothing to envy to others may be more known in the same range.
I would do this chosen without hesitation!