  The difference between left- and right-handed particles is perhaps one of the
most puzzling aspects of the Standard Model (SM). In left-right models (LRMs)
the symmetry between left- and right-handed particles can be restored at high
energy. Due to this symmetry these models are quite predictive with regards to
experimental observables, making them interesting beyond the SM candidates.
Here we discuss the more symmetric LRMs, the experimental constraints, and the
fine-tuning present in the Higgs sector.
