Use high-sens mics like standard SP-CMC-8 +bbox on line-in.
No problem for amplified concerts with that setup.
http://www.dimeadozen.org/torrents-details.php?id=212223&hit=1
OR low-sens mics like yours or dpa 4061 + preamp on line-in.
If you dont mind losing all that bottom end in your recordings by all means use the mic input for mics like the DPA 4060 it might not be such a bad thing but for Cardioid mics like the 853 or my mics you dont want to lose any bottom end at all. And at almost 20 db down at 25hz... you really dont want to lose all that even before you start recording. * as can be seen in the purple line *
yes, for my dpa 4061 setup mic-in is no problem as the bass-roll off is not bad for these boomy mics.
With sp-cmc-8 mics Line-In works great aswell.
I knew about the mic-in and internal-mic bass-roll-off before I purchased the ls-10.
I´d go line-in with just a bbox and my sp-cmc-8 for loud rock shows and it works great as you can hear in the Steve Lukather sample above from dimeadozen(NOT my recording though).
Additionally I can use my SP-PREAMP and even record speech on line-in ...with lotsa gain from thy external pre
of course.
The result still sounds great though.
=> no issue at all for me using the ls-10.