FWIW, I used a borrowed blad system for awhile to play with many years ago and they were all the chromies (50,80,100) with a 500C. The lenses were before the T* era and colour rendition was super under lower light (ie low contrast) conditions. Bright contrasty daylight, the color slides I got werent as nice as the ones with the nice even lighting of the canopy of a forest.
Only thing I would watch for are the conditions of the compur shutters. They were/are nice and robust, but they still are mechanical, so after 30+ years of wear and tear, they maybe ready for a rebuild. Bottom line ... chromies are still very nice in color use so if you can find one for cheap ... go for it. According to local BLad fiend, the 100 Planar was the best lens ever.