Check out the “Vandoren Reed Comparison Chart” for which strength would work best for you:
The Vandoren “Classical” V12 reeds for Bb Clarinet are the manufactured from cane tubes with the same diameter as cane used for alto saxophone reeds. As a result, they have a thicker heel and are cut on a longer palette with a slightly thicker tip than the Traditional reeds. The longer palette means that more of the reed is vibrating, resulting in a deeper, richer sound. The thicker tip gives body to the attack and also increases the longevity of the reed.
Price per box of 10.