I have tried the Darkglass and it seemed very focused on the lows and the amp had some nice tonal options, but I couldn't focus the bottom end the way I wanted to so it went back. If these were your only two choices would suggest the Genzler for the versatility alone. All the genzler cabs I ever played were very punchy and accepted EQ well and the Magellan amps are wonderful. Best to try out both to get your own ears opinion of any combo. Lots of folks like the Markbass combos as well. Let us know what you decide.