Good alternative to halogen spotlights

I was convinced that there is no dimmable GU5.3 LED spotlight and was skeptical about whether it works. I have only got me two lamps to try that were from about 5m in length integrated into my 12V halogen cable system readily. The light is clear, but not cold, and has a certain greenish tint. The old halogen spotlight generated a significantly stronger reddish-yellowish tinge, none of my family is the now greenish tone misbehaving. For me, the whole discussion of light tones is a matter of taste. With the sober light the LED fit well into the kitchen, into the hallway or in the office, in the living room or bedroom I would not spoil.
Thrilled, I then dared to replace also the remaining three spotlights with LED spotlights. That was not good. The lights blinked at full load. By replacing the old transformers against a specific transformer for LED spotlight (13, -), the problem was easy to fix.
The LEDs are good to dim and dim sees each radiator through the many points of light like a small starry sky. The LED spotlights produce about the light output of conventional halogen lights with 20-35W. (The details of Lumen Star of 50W are clearly exaggerated). Since I had 20W spotlight before, the total light output is now still perceived better. Instead, the system consumes 100W just over 20W. The annual savings amount to about 30-40, -, so that the investments made will pay off in 2-3 J., assuming the lights keep as promised.