I have tried and tested a sample of the Matrix MXL.
This units supports DVD9 etc like Messiah 2 and only requires a 18 wire installation (+2 additional wires if you want to remove macro on dvd movies).
Installation took place in a V7 with great results:-
The Getaway (Pal DVDR) Booted 1st time from Browser Screen
The Thing (NTSC DVDR) Booted 1st time from Browser Screen
GTA Vice City (NTSC DVDR) Booted 1st time from Browser Screen
The disc was identified very quickly as soon as the tray closed.
The Matrix MXL was then tested in a V3 with the same results as above.
With only a 18 wire install, installation in a V3 becomes alot easier then with other units (Magic, Messiah etc).
Full diagrams can be viewed Here
The Matrix MXL is aimed at Pal / Euro machines only.