Regardless whether you put them in the wing or in the nose bowl, AIM THEM! I can't believe how many people complain about their lights, but they never take the trouble to aim them properly.
About 14 years ago, I had HID lights installed in my P172D, which are wing mounted. I knew that the stock lights weren't good enough, and I wanted what was then the best. So my IA installed them, and that night I went out to try them out. Boy, was I disappointed! I'd just spent $1000 on the lights and whatever he charged to install them, and they weren't much better than the stock lights had been. But then I realized that they were grossly out of aim.
So for the next 2 hours, I aimed them. The taxi light was easy--I just pointed the airplane at a far away hangar, and twisted the adjusting screws until the light pointed exactly where I wanted it. The landing light was more difficult. It has to be pointed at the runway when the airplane is on approach pitch, and that's quite a downward aim. So it took me at least half a dozen attempts before I was satisfied, and with 22 screws holding the light lens on, it was time consuming! But I've never had to change the aim since then. When I'm on approach at night, at my normal airspeed and flap configuration and on proper glide path, the landing light shines so that I see the numbers first, when I'm still quite a ways out, maybe a quarter mile or so.
Now that LED lights are all the rage, many are installing them--but also many LED bulbs, especially the less expensive ones, aren't properly focused, no matter how they're aimed. They may be bright as the sun, but if their beams aren't focused properly, they're useful only for others to see the airplane--and that's OK if that's what you want. But if you want to be able to see better yourself, the bulbs need to be both aimed and focused. Landing lights should have a narrow beam, both horizontally and vertically, almost like a spot light. Taxi lights should have a much broader beam horizontally, but a relatively narrow beam vertically.
Properly aimed and focused landing/taxi lights make night operations a whole lot easier.
Cary