I've got (3x) 541-S, (1x) 541-T, (1x) 541-THB and (1x) 541-X with a Voelker trigger.
Can you tell I like them?
Most are very accurate although I've heard of the weakest in accurate are usually the 541-T with the sporter barrels. Mine is very accurate so I haven't had that problem.
The 541-S is by far and away the most desirable and is usually very, very accurate.
Some of the later year models have adjustable triggers that you can really dial down to a clean, light break.
They're little brother is the less expensive 581 which is also typically accurate.
As for the value, for a nice 541-THB I would suspect anywhere in the $450 - $600 range. They are typically great shooters and balance fairly well for a heavy barreled gun.
My only gripe on the 541 series is the protruding plastic magazines. They can be had in 5 or 10 shot and I believe the Remington Nylon 77 magazines can also be used in them.