True halogen alternative

The LED was selected for a living room ceiling lighting (6 furniture luminaires). First 2 were ordered to trial. Unfortunately, this had a different design shown. The arrangement of the individual SMD there is symmetrical, no components on the back side and ended connection pins. So only advantages?
It is nice, of course, that the LED is very shallow, and safe connection pins has. For the diameter is slightly larger and the socket fit this simply no longer neatly in the designated holder. They also flickers extremely on existing transformer.
Then again 6 LED ordered by Incubator24. These correspond to the imaged design and work perfectly. The luminous flux of 140 lumens is achieved subjective and corresponds to a 15 -20 watt halogen. The bright light color, but still warm tone of about 3200 Kelvin convinced. At least with 5 LED, a shimmers slightly greenish. Too bad, but with time the fall probably not - who looks always directly into the light source (ceiling).
140 lm at 2.4 Watt incl. Electronics = 58 lumens per watt. No best value, but a realistic value, as opposed to do Lumen XXL advertising.
Some of the LED already my conclusion is obtained for less than 5 Eure, therefore for this design
Positives:
- Meanwhile, a real alternative with sufficient intensity.
- Illustrated design fits into G4 furniture installation people.
- Works seamlessly on halogen transformers.
Negatives:
- Something short pins.
- Differences in color of individual LED.