Hi. My daughters (both in middle school) have been playing the double bass for 4-5 years. We have been renting a bass, but have reached the point in the rental agreeement where we have paid enough to purchase a new bass. My options are Shen SB100 plywood, with a good bow, setup and bag, Or, for the same price, Shen SB150 hybrid, with a lesser quality bow, setup and bag. Have been told of problems with Shen SB150 hybrid cracking. We live in Pittsburgh, so temperature and humidity are quite variable. The girls don't plan to pursue music in college, but do enjoy playing in school orchestra. Mainly bowing, but some pizzicato. The new bass would be moved around a bit so am thinking the SB100 might be a better choice. Any help would be greatly appreciated.