If by cheapest you mean least expensive here's the way I would go.
If I was a new start up with a limited budget I would go with go with a lease return.
There are a lot of companies out there that haven't lasted a year because the guys starting them up are clueless. No business skills what-so-ever.
I've been able to get smoking deals on lease return vans and machines within the past year. They've saved anywhere from 8 to 15k. Machines such as the
Boxxer 421, Legend, Bluewave.
Good reliable machines that bought at a "cheap" price and have a proven track record and that we can backup with service if they need it.
After I was established I'd purchase new.