In the market for a new M1 MacBook Pro? I’ve checked the Apple Store & you can get an M1 MacBook Pro with 8 GB of Unified Memory & a 256 GB SSD OR one with 16 GB of Unified Memory and a 256 GB SSD with both configurations priced identically.
One could argue that having more memory could offer more value in four or five years time.
Alternatively in four or five years you might need more storage than 256 GB.