I have the RD LED's and they are still holding up. I agree that they are not very bright, but LED is LED. Not matter what you do to halogen, it will still look like halogen, and won't give you that crispness you see with LED. I can immediately see the difference between non-LED and LED, and in my eyes, there is miles of difference.

So I take the different tack, that I wouldn't waste my $20 on the GPT since they are not LED, and won't give me what I'm looking for. All my opinion of course.