I fear I have taken the OP off in the wrong direction...
I once owned a set of L710, near mint condition. They sounded very good to me at first pass. But, the longer I listened to them the more I began to not like the bass. It was constrained with anything electronic. It sounded like they were hitting limits even when at moderate levels. So, what kind of music? Anything with synth drums, dance, pop, electronic, etc. They weren't bad but they weren't great (to me) either. L810s are decent all around though. I've had them at home (although not in the same home) but did not notice any of those issues. The L810 not my favorite ADS but a much more balanced speaker overall than the L710. IMO the L710s would do better if high-passed above 60-80Hz with an active crossover and fill out the bottom end with a subwoofer. I believe they would slam set up like that.