glassed back bows with thinner glass have less handshock,ive had longbows with 30 thou. and 40 thou. thick glass that were trap tillered with yew core that felt like selfbows,all my LB's now are trapped with 50 thou glass and yew core,very little handshock, i had bows in the early 90's that had 80 thousandths glass and they would nock your teeth out,sometimes bowyers would use heavy glass cause they could save money by using less laminations,if you buy a new bow i would ask the bowyer the thickness of glass used,you don't see many shooters in these threads bringing up glass thickness! thats my first consideration, then design, then core,lastly veneers.