I have updated the link in the previous post to...
http://www.aurora.eu.com/ProductPages/LampProductDetails.aspx?g=3285&c=65&b=71&o...They are 7W, so will be as bright as a 7W strip light, if that makes sense?
They are much the same as energy saving lamps that you get in all the DIY stores (and the same as the ones BG sent to all it's customers a few months ago). They are just a different shape.
Your best bet would be to find a lighting showroom somewhere near you and have a look at what is available. You will be able to compare them all side by side. Look on the website I linked to above for a list of the dealers in your area.