Another great old (last one built in 1981) biz-jet is the Sabre 65.
It can be RVSM modified and is a stage 3 aircraft. It has a solid 2,100 nm range (5 1/2 hours at .74 mach. with a one hour fuel reserve). High speed cruise for shorter trips of .80 mach. Easy to fly. You can get a really good one for under $2,000,000.00 USD.
However, a bit of a dog at max gross in the summer. Will not get above FL 37.0 at max gross weight when its hot. Takes about 3 hours to get light enough to get to FL 41.0.
But for the money its a hell of an airplane.
I know of 4 Sabre 65s that go to Europe from the US fairly often.
(Not mine)