If you like the way the B50 shoots, you can make the fast flight work for you by adding string silencers…

String silencers are very handy tuning tools. You can slide them up and down the string to achieve the arrow flight you want. If the arrow’s are stiff, move the silencers towards the tips. If the arrow’s are weak, move the silencers towards the center.

You will find the fast flight way more durable than the B50. It might be worth the effort to get it working with your heavier arrow setups.