Only to the extent of checking them from time to time. If one were to fail, I'd replace it with a copy from one of the other.
Personally, I've never had an SD card or SSD fail and I was an early adopter of SSDs. I'd hate to admit what I paid for my first PATA 32GB Memorite SSD almost a decade ago but it's still running fine.
When OCZ brought out their first Vertex SATA SSDs, I replaced my Raptor RAID-0 array with 4 of them. When I got my first Revodrive PCIe RAID SSD card, the Vertex cards went into netbooks. All are still working as far AFAIK.
The only flash memory I've had fail were USB keys and that was probably due to physical abuse.

Ah, if you check them periodically it should be fine. The problem arises when they're unpowered for a long time, as the cells aren't refreshed and the voltage level drops to a point where they become unreadable.
First SSD for me was the veritable Mtron 16GB. Was about the first consumer SSD here in the UK. You could buy a 1TB now for the price and probably still have change.
