Each will work fine, and purists often like the passive approach, using the buffered only to drive longer cable runs. I had this preamp for years, it's a great piece, and oddly, I ended up preferring the buffered outs which just seemed to offer a bit more bass control to my ears with no loss of clarity, on either long or short runs of cable. I've even used both sets together for temporary biamping. As Bob says above, try both and let your own ears decide if you hear any difference that matters for you, they may sound identical in your set-up.