I've owned 3 out of the 6 and many others mentioned throughout the thread, I vote GK. The Genzler was nice but it lacked the bottom that I was looking for. The GK has tight punchy lows and crisp highs that go well with my style of playing. The Genzler was no slouch but just not my taste? IMO it matches well with old school music. Currently it's the GK MBF 800 for me