When comparing ODROID-W vs esp32, the Slant community recommends esp32 for most people. In the question“What are the best single-board computers?” esp32 is ranked 45th while ODROID-W is ranked 64th. The most important reason people chose esp32 is:
Many different variants are available depending how good you are at soldering or how small it needs to be.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Software compatible with the Raspberry Pi
ODROID-W is compatible with the Raspberry Pi at least as far as software goes. It can run any software built for the Pi.
Pro Amazing heat dissipation
The ODROID-W has some great heat dissipation. From studying the heat of the heatsink, the maximum temperature registered was 37 degrees Celsius, and that was registered when the board was doing a lot of unpacking through apt-get. Normally the temperature is even lower than that.
Pro Can fit most Pi cases
Since it's built to emulate the Raspberry Pi, it's roughly the same shape albeit a bit smaller. But even then it should be able to fit most Raspberry Pi cases.
Pro Many variants available
Many different variants are available depending how good you are at soldering or how small it needs to be.
Pro Very small
Can fit inside small devices.
Pro Very cheap
Without case can be below $5.
Pro Has ultra-low power mode
Pro Has bluetooth and wifi modules
Cons
Con Obsolete
Don't fall in love, this model is no longer available.
Con No on-board Ethernet
The ODROID-W has no on-board Ethernet port available, however this can be fixed by using a docking board which has an Ethernet jack.
Con Needs a multi-USB hub
Since it only has a USB host connector available for a full-sized port, you most certainly will need a multi-USB hub to connect more than one external devices to the board.
Con Some variants require soldering
Not all variants include easily plugable pins. Usually only the more expensive variants include these.