I have moved a worthy reply from one poster over here - the link is well worth checking out -
thankyou Clonicus - I was particularly thrilled to see the large range of globes available, even 'candles' for my one and only old-fashioned chandelier.
"Hi Taurisk,
I have replaced 20 12volt downlights(50watt) with these LED retrofit replacements and are very happy with both light level and power consumption (6watt). I hope this helps.