The BMW G310 and the Street 750 are both great bikes, but they have some differences that you should consider. The G310 has a smaller engine, but it has a better power-to-weight ratio. The Street 750 has a larger engine, but it is heavier and has a lower power-to-weight ratio. Additionally, the G310's fuel efficiency is slightly better than that of the Street 750. Depending on your needs, you may want to consider the G310 for its power and efficiency, or the Street 750 for its larger engine size and more robust power. Ultimately, the choice will depend on what you prefer in terms of power, efficiency, and overall size.