I've had the same experience as Torment... I bought CF's and while they did last longer than normal bulbs, they didn't last 10x longer, maybe 2-4x. I'd worry about the same problem with these high power led's... will they be sensitive to power surges and sags (I think that's what killed a couple of CF's at my house earlier this year)?
If the LED bulb's are as reliable as low power led's (which seem to run forever and don't seem to be bothered by much) then I'll be all for them, in the meantime I still use CF's but only in spots where I don't want to replace bulbs often (hard to reach).