Well let me tell you this from experience with the Bose. They do work well in the 145, but they are best at tuning out the lower frequency noise like pistons and props. BUT, the 145 has a shockwave that forms just above the windows at higher mach #s like .70+. They don't do as well at filtering these noises out. I think they kind of amplify it a little as they are trying to cover it but just can't. Also the long days you can expect in the 145 they get a little tight. Also unless you are short, if I shifted my head to the right a little I would hit the visor track, just seemed a litle bulky. BUT all thru my flight instructing days and flying a 310, and Seneca around, there is nothing better!!!!!