I run all rebuildables now: have a couple K4s, a Rose V2, an Erlkonigen, and a Kaiser. Even have the rba in my eGrip. Won't ever look at something that takes disposable coil heads again
I thought I would feel exactly the same as I run mostly rebuildables now too, Origin V2 and Aeolus drippers, a K4, some Taifuns, and an ErlK that I gave away, but there is just something magic about that little ole' BVC in the BB IMHO.