Thermal/Insulated Insoles for Mountaineering Boots?

I recently picked up a pair of the Nepal Cubes and they are great boots, except for the fact that they run quite cold.

The battery operated heated footbeds are not of interest, but I was wondering if anyone here had had particularly good results keeping feet warm with insulated insoles. If so, which ones?

I have used the Superfeat Redhots with decent luck. Of course a good felt wool liner works well but then lacks the arch support.

Thanks for the input. I ordered the Superfeet Redhots. I'm a little concerned about the volume of the heel support, but from the way the design looks in the picture, I think some customization can be done with regard to that.

I also decided to give these a try amazon.com/gp/product/B001G… in case the superfeet do not work for me.

-Chris