These bulbs use an array of 20 or so SMD LED's , each with a small diffuser on it. The light is good, though the multiple point sources give rather complex shadowing. The bulbs which employ fewer bulbs (i.e 3 or 4) I think may have a better colour but are not as bright. Perhaps a way forward is to buy 4 best LED bulbs 2015 like GU10 bulbs from a reputable online seller, one that has a money back guarantee ( have this), then you can try them in the existing fitting. In that case I just get LED GU10 bulbs and don't have any need for transformers. Not sure what exactly you were referring to, but dimming a bulb DOES decrease energy use.
While the current used by the best LED bulbs in 2015 is small, the wiring would need to be sufficient to support the option of Halogens being plugged in either by accident or by a future user of the house or flat, who may not be aware of any wiring thats only able to take an LED load. People have been changing over from halogen to best LED bulbs 2015 and worked through all these problems before finding the blog!
Some light bulbs contain small amounts of mercury that can harm the environment. You can take old bulbs to a household hazardous waste collection facility to safely dispose of them. I firmly believe we should design houses to serve the existing owners - not the potential future owners - that approach is what led use into ridiculous protocols such as valuing houses by their square footage, or the number of fireplaces - in short, designing for 'resale value' on your own house project is the thing that often perpetuates many of the dumb things we did in the past.
One the last bulb from the driver is replaced, the total load drops to , say 15 watts which might be below that which the halogen driver can work with. The only bulb which I have replaced with best led bulbs 2015 is that for a porch light, which originally was just one halogen lamp (i.e. replaced 1 of 1), and turned on/off by light sensor.