The Heli-m has a Super solid back wall..I swear it feels like you can relax so much at full draw and you cant make the string creap...There is a little hand shock but thats expected for the 3.5 lbs...Personally the lightweight of the bow isnt a selling point IMO.I shoot a 420 grain arrow at 29" and at 65 lbs the bow is shooting 281 fps..At 70 lbs.its 291 fps.It is super smooth to draw.It feel like you can easily shoot a little more weight without even noticing it.I liked it better every time I shot it..I havent even shot my new one yet....I cant wait to set it up and start shooting it.But Im putting my sights and rest on the Heli-m off of my Swithchback,And I still want to hunt a little more..... I will try to get some pics up before long....