1) first did some experiments with the Ikea Jansjo LED lights (http://www.ikea.com/nl/nl/catalog/products/80163192/). However, I have the feeling that the colors are not nearly as good as with my flashes and just moving the color temp slider in lightroom doesn't help.
2) The other option is energy saving daylight bulbs, but for a decent amount of lighting I quickly need several hundreds of watt's in energy and this may heat up my subjects too much. Is there decent, high-quality daylight LED's available. Please let me know if you hve any experience! What woudl you recommend?
You want something wit a high TLCI (akin to the color rendition index, but accounting for the peculiarities of a tristimulus CFA). High powered daylight on a budget? Hedler's LED1000 comes to mind. Litepanales make nice aera sources, L5-Cs come with a richly filled spectrum and the defined penumbra&cuts of a Fresnel.