Will any color head work ok for b and w....there are a lot of really cheap enlargers out there.....I have always used my Omega D2V...bought 30 years or so and have used only the condenser head and for all formats 35-4 x 5
I had (still have, sort of) an Omega B22 with condensers, in the mid 70's, used for years for 35 and 6x6, used a rental darkroom for 4x5. Someone gave me a D2 missing the condensers. I bought an Aristo cold light (Fred Picker convinced me not to get condensors), and the first neg I printed had a very long range, including some harsh sunlit areas (internal atrium shot with 4x5). The burning in was so painless, I continued to use it and never went back. My current bulb is the V54 high intensity (made by Aristo), Forte Fiber Polygrade, can't beat it. My condenser B22 is now in my sister's darkroom in Boston.