Cree LED's have reached over 200 lumens per watt,earlier this year, but are not yet on the market, but several emitter manufacturers are selling lamps at over 100 w/l. The GE and Philips lamps that are being sold in the box stores are way overpriced.
But LED's pay for themselves in off grid situations and in situations where changing burned out lamps is expensive. As far as I can tell LED's are the lamp of the future. We use them for most of our lighting and are completely satisfied with them.