I went with Le Potato because it has 4 USB ports as opposed to 3 on Orange Pi.
Orange Pi will probably have similar performance as the Le Potato because they use same A53 cores, although Orange has them clocked faster.
2GB of RAM was not an issue with my IMX571 mono camera once I setup 2GB swap. Without swap it was running out of memory.

I see that Orange Pi has model 5 which is about $85 shipped from Ali and should be very fast and it has 4GB of RAM.
Maybe I will order one to try it out. Only trouble is that it does not have Wifi.

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