I use a red OPTILED Festival lamp. It's got a narrow spectrum, standard Edison screw base, 35,000 hour rated life and is universal voltage. Specifications here:

I've used it with a variety of papers, including very sensitive VC types, and experienced no fogging out through six minutes exposures. Price, considering it can be simply screwed into a standard lamp socket and that one will probably last the rest of my life, seems very reasonable to me:


I bought a half dozen with the intention of placing them uniformly along a planned long, narrow, permanent darkroom in a home to be built. For now, a single one bounced off the ceiling is adequately bright in my small, temporarily converted bathroom occasional darkroom.