C to C

I have been playing for 6 years, but still consider myself a beginner.  Besides other advantages (cost, portability) I chose to go electronic (first Malletkat, then Xylosyth) because I just could not figure out how to do 4-mallet voicings on tunes without utilizing bars below F. Both MK and XS provide C to C models, and that solves my issue. My question is: Why do most all acoustic vibes go F to F? How can everybody else be fine with this, see no problem, and yet I seem to require C to C in order to achieve the melody/chord voicings I want? Would love to acquire an acoustic instrument if it could address my issue and still be affordable.