I have about 130 hours on SCFS aircraft, and I am not sure "beautifully maintained" is a term I would use.
1 plane had radio issues squaked several times. Resulted in us leaving with a working radio, came back IFR with a radio that we could barely here ATC, and could not send. We were IFR, using Ident to ack ATC requests.
Another airplane, we were outbound IFR, in the clouds ten minutes when we had a vacuum failure.
On my PPL check ride, the AI failed while still in the pattern after takeoff.
I have squaked many items, that went month after month without being resolved.
I don't have a problem with Dennis, but I would not say that the maintenance there is top notch.