Guys - Cool it down. You'll both glow in the dark soon!!!!
The thing is that the MOT test is changing and the tester will now check to ensure the car has EU approved lamps and ballasts, that they have a suitable cleaning system and are automatically self leveling.
I know you can get superb quality aftermarket systems with genuine Phillips parts (not back alley stuff as implied) - I had them fitted to my first 9-5 and must admit the beam was spot on and no different to halogen beam except much brighter and clearer. I also made sure I only had the 4300k capsules which give out the optimum light. There was a clear crisp beam but the genuine ones like on my 2005 9-5 have a shutter which gives a distinctive cut off. My car did have one big advantage over yours and that was self leveling suspension so lights were always correct even when laden. Mine went through MOT's with no problem and my local traffic cop was happy.
Trouble is the new test checks for all three items, EU conformity, self auto leveling (the expensive replacement part on the 9-5), and washing system (could be wrong but I think it has to be hi pressure jets as wipers can scratch glass and affect lamp reflection), and from what I know your 9-3 has none of these. The dead give away would be seeing the separate ballasts unless hidden away somewhere dry.
My suggestion is try it through MOT. If it passes then fine but if it fails then you have wasted some money - sorry but I agree these are fantastic lights and I know I wouldn't be without them. In my opinion no halogen equivalent no matter how good 120% plus things can ever match a Xenon system and I've had both in same cars from 1999 9-5 SE to my 2005 Vector Sport. I have only had one sort of fail by going slightly pinkish but I was able to get genuine Osram for £58 the pair.