Both are fabulous choices, the clarinet is a bit lighter. I always suggest selecting the instrument that has the sound you like the best. Have you gone to a music store and lifted the instrument in cases for those two instruments, that might make a difference. Both instruments take about the same amount of air to produce a decent sound, reeds cost about the same, and maintenance is about the same. Do you have friends you might play in a (sax or clarinet) quartet with? Sounds like a fun project, good luck.