At last the end of the tungsten bulb is close - from Sept 1st, shops will not be able to order new stocks of 100w incandescent and all types of frosted light bulbs. The rest are being phased out over the next two years. OK, so there are problems with some of the cheap low E bulbs as they are not as bright, but the latest ones have a brighter, whiter light and can be dimmed. Also once there is momentum and money coming in, the manufacturers of these bulbs with be able to put more R and D into even better ones, such as the LED light bulbs.
So why make the switch? Firstly it saves you money as each bulb uses a quarter of the electricity and lasts up to 20 times longer, so replace a 150w traditional bulb with one of the latest low energy bulbs and you could save as much as £20 / year as well as reducing your carbon dioxide output by half a ton. The switch saves resources too. Think of all the glass and metal that goes into making 20 tungsten bulbs compared with one low energy bulb.
Find out more about the pros and cons of the different low energy light bulbs here: http://www.ableduk.com/alternatives.html