Delta makes good products which solve several problems. If you want buggy-like flex, investigate a 3 link. All depends on what your goals are - these remain to be stated.
Given the same bushings, articulation is closely the same between varying designs, as bushing bind is the limiting factor in radius arm designs. There is only so much deflection allowed as the articulation cycles and tries to twist the axle housing. Never understood the front sway bar on radius...