The Panther cars are akin to a 2WD F-150 with a trunk.
- body on frame
- V8
- RWD
What's not to like?
The reason they stopped selling them is because the only real volume market was law enforcement; couldn't justify making them, especially when they were giving price concessions on many fleet deals. Fuel economy standards were making it difficult to be viable, and also emissions (the mod-motors were aging in terms of design). Though, IMO, a 3.5L EB or Coy motor would have made the platform worthy of a few more years in terms of drivetrain.
Actually, the Panther's were going to be phased out before the last update in 2003, but the demand from LE agencies was stout at the time, so they did some chassis and suspension tweaks and milked another 8 years out of them.
The MGMs seem to be still running out there with some frequency. My buddy's son just bought a very clean 2004 with 73k miles on it ($7500). It's nice! I'm jealous!