If you buy PIAA's, you might as well just buy an HID conversion kit IMHO. Only a few hundred bucks more and they last longer and they are muy muy better.
Well, I think that if he is going for "looks" the m-tecs will do just fine...and they also cost much less. There is a big cost difference between a $20 dollar light bulb, with easy install; And a real HID kit which is $350+ and install takes more time (removing bumper, removing headlight, drilling, etc.) Before I got my HID's I had M-Tecs and they looked great!