I work for a toy company and to date all of our electronics have used masked chips. This incurs a chip masking charge and a lead time of 45-60 days to mask and manufacture/program the chips.
Recently one of our vendors offered us an OTP (one-time programmable chip option). No chip masking charge, shorter lead time to get chips programmed (~30 days). The one downside is the cost of the chip is higher.
Besides a cost analysis of when using an OTP chip will be better than a masked chip (based on volume produced) to help me decide which option to go to, what are other pros/cons of using a masked chip vs an OTP chip?