Use 'incomparable' to stress that something or someone is uniquely impressive or special. His dedication to his craft is incomparable in the industry.
Pro Tip 2/3
Positive Connotation
'Incomparable' often implies excellence or superiority, evoking a positive feeling towards the subject. The incomparable charm of the old city captivated every visitor.
Pro Tip 3/3
Hyperbolic Expression
Sometimes, 'incomparable' is used to exaggerate, not to be taken literally, but to simply show great admiration. The meal we had was simply incomparable.