When you do that, got any info on max rof? Would that even matter in the present market, as long as you're over 11?
My EP mag is semi only with a fixed debounce and no buffering, so it only goes as fast as I can hit it perfectly. Theoretically it is 20 bps, timing-wise, but 14 or 16 has been the real limit at the trigger.
I'm expecting an EM mag to be a hair faster to fire than an EP/Ego-mag due to the simpler actuation. At 20 bps you're getting into valve/reg cycle times, so I don't know that it matters from one shot to the next.
Plain solenoid setups (Electro-Mechanical) don't have an LPR with o-rings and seals to take care of, which has been my main interest in them. On the other hand, I haven't had to mess with my micro-rock or that little SMC solenoid valve I bought from Luke years ago. I still have a new spare SMC. As far as embedding an LPR, it is common practice, but it does step up the maintenance and trouble shooting.
I argue this with myself often.