The maximum CF I/F speed of ND2730 is UDMA5.
So the theoretical maximum is 100MB/s.
Considering the protocol overhead, 84MB/s may be already the best performance for ND2730.
So if you want to use SSD for the safety from physical shock, then it is reasonable using SSD. But if you use SSD for the speed, may be no much difference with the HDD.