Cant compare just like that - rubber vs bracelet
because, there are many types of rubber strap for watches, personally i like rubber strap, but not all rubber strap
1. hard rubber strap - feeling plasticky ! like those with G shock. i didnt like it but its acceptable - durable and affordable
2. thick silicon rubber - affordable & soft. it serve the function but can be better
3. natural rubber - comfort, not lasting... still affordable
4. vulcanized/other improved rubber - pricey, fragant if you wish, fine, comfort
bracelet can be very comfort as well, depend on design and buckle, just its heavier!