Looking for an affordable 4-passenger aircraft

Well it won't go quite that fast, and it's not pressurized, it's a
single, but it will carry 4 and it will go anywhere reliably, a Cessna
182 (or 182RG if you want the extra speed). Standard issue all american
airplane. Hard to beat. $100-$150 per hour.

In the Piper line, a Cherokee 235 Pathfinder or Cherokee 236 are the
ones. $100-150 per hour.

If you REALLY have to have pressurized and that sort of range, you are
above your budget because neither a Cessna 210P or a Piper Malibu have
that kind of range, though they come close (both are pressurized).
$150-200 per hour

Something like a Beech Baron 58P will do what you want, but believe me
it will COST to buy and COST to run. But it's pressuriized, a twin and
plenty fast. With long range tanks it might go 1000 NM, I dunno. If you
have the bucks, its the one to have. $200-250 per hour.

(The per hour figures are based on 200 hours a year and are rough
estimates).