Most 4 links still need a track bar to keep the axle centered. Triangulated is the only way to not need one because the upper links hold center. Triangulated is more common in the rear,I don't think I've ever seen it on the front of a street driven vehicle.
Most front 4 links are either straight or semi triangulated so they require a track bar,stock we have semi triangulated 4 link.
Typically 4 link is more stable at higher speeds and 3 links flex better,but that depends on the design.
Radius arms/Y links are pretty strong,easy to make,and usually cheaper then 3&4 links but do don't perform as well.