What problems, exactly? I have read the threads here and virtually all seem happy with them and have had no real issues with them. The only problem that I have heard of was some radio interference, but that's easily solved by attaching a couple ferrite cores to the wires. I did this and have had zero issues so far.
Sorry, but I cannot recommend these. I tried them and they were worse than the stock bulbs, hence why I went with LEDs.
The problem is that installing aftermarket LEDs into halogen projectors will create glare and may blind oncoming traffic. Our iMs at least have a projector beam, most older cars have reflector headlights. Aftermarket LEDs/HIDs installed into halogen stock unit do nothing, but create danger for oncoming traffic and make people angry, especially those in front of you. I literally stepped out of the car today and told one woman her aftermarket LEDs suck and blind people even during the day. Of course she said she does not care, but she will care when she gets a ticket. I do hope she gets one. She was driving a Chevy Sonic, it has stock halogen reflectors, the worst possible setup for LED/HID bulbs.
Proper way to install HID/LED bulbs is to retrofit your headlights. You have to replace your halogen projectors with HID/LED projectors. There are shops out there that do this, like Lightwerkz in New Jersey. It's not cheap, but you actually get factory-like properly tuned headlights.
http://www.lightwerkz.net/
One more thing. Anything above 5000K is rice by default and looks Chinese. I don't know the temperature color of our stock LED DRLs, but I do know all major factory HIDs are 4300K (Lexus, Acura, Infiniti). Stock LEDs could be a hint brighter (Lexus ES350 or Toyota Corolla), so probably 4500K-5000K. If I was getting a retrofit, I would've picked Acura projectors, especially Acura TSX/TL HIDs - they are amazing and I would've combined them with Philips 4300K HID bulbs, Denso or Matsushita or Mitsubishi factory HID ballasts.
This video shows the difference between projectors. Beam patterns are also clearly visible. Halogen projector creates a wide spray beam, while HID projector is concentrated and directed. When you replace your halogen bulb your stock halogen projectors will keep spraying super bright LED light on everyone around you. Not good.