RegWrite what type of key should i use?

Im trying to add some registry keys for a backup program so it remembers checkbox states (ticked or not)

Obviously using RegWrite to write the keys but

Which Value am i supposed to use out of these below? what are the different types for ? it doesnt mention the types purpose in the help file.
REG_BINARY, REG_SZ, REG_MULTI_SZ, REG_EXPAND_SZ, REG_QWORD, and REG_DWORD

Im guessing REG_SZ ?

And if im creating a value which will i guess be 1 for checked 0 for not checked
Is 1 ok or should it be 0001