Your destination usually decides between a helicopter and a private jet, not your preference. The two aircraft solve different problems and are rarely true alternatives.
A helicopter cuts out the road journey. It lands at a site, not an airport: a plant, a venue, a hill town or a ridge. That makes it the only choice where there is no runway, and poor value where there is one. Over long distances it is slower than a jet, and its range is a fraction of a jet’s.
A jet needs a runway at both ends. That often means a drive at one or both ends. In return you get speed over distance, flight above most weather, and a cabin where you can work or rest.
On a flight shorter than about an hour, most of the jet’s speed advantage is lost in the climb and descent.
Often the two are used together, not compared. A jet flies the long leg between cities. A helicopter flies the last leg to a site no aeroplane can reach. This is common for site visits in difficult terrain, and it is planned as one trip, not two bookings.
Cost works differently too. Helicopter trips are often driven by ground waiting time, not flying time. A helicopter held at a site for a ceremony or meeting is booked for the whole period. Jet charters are driven by block hours and positioning. So comparing hourly rates across the two tells you very little about a real trip’s cost.
A quick test: if your destination has a runway and a good road, start with an aeroplane. If it has neither, start with a helicopter. If it has one but not the other, the answer is usually both.