I've only been shooting them for about a month so I can't speak truthfully on how durable they are and luckily at this point I haven't hit anything other than a target to see if they bend. I lost speed but I just switched my entire setup completely. I went from a blazing fast PSE Evo shooting in the 310 FPS range with 390 grain arrows to a pretty fast Carbon Spyder 34 ZT that chrono'd 280 with a 470 grain arrow. I switched my arrow setup because of the big bodied deer I hunt in the Midwest, my lighter arrows just aren't getting great penetration on those deer.