The Four Star 40 and 120 are Bruce Tharpe designs when he worked at Sig. After leaving Sig and starting his own company, he designed and sold the Venture 60 which falls between the 40 and 120 that Sig owned. I'm sure there were improvements designed into his Venture 60 learned from the 4*40/120 designs. Later, SIG produced the 4*60 to fill the gap between the 40 and 120. All good designs. I fly both the 4* and Venture. I would give the edge to the Venture 60.