The great American land barge...
Described as heroically overdecorated, it is the last great throw back to the late 60's/70's era of American luxury. Love or hate its boxy, formal, chrome laden style, you can't deny this Cadillac's sheer assault on your visual senses. At 220" long, it was the biggest sedan you could buy in 1991.
The interior is richly furnished, but elegantly simple by today's techno overload standards. It has all the regular gadgets like power seats, electronic climate control, lights everywhere, lots of wood trim, sunroof, CD player, etc. I like the throwback touches like button style leather seats, shag carpet, digital displays, airbag-less steering wheel, chrome accents, etc.
The driving experience is somewhat of a throwback as well, with the very light steering. Not much feel, but it handles surprisingly well for such a large car. If you opted for the 5.7 V8, you got a firmer suspension, and a much better handling car IMO. The 5.7 cars still ride nice, but you will feel the road a bit more than other Cadillacs of the past.
Both the 5.0 (305) and 5.7 (350) V8's are small block Chevrolets with throttle body fuel injection. Both are known for their longevity and virtual bullet-proof reliability. These motors have been known to go 200-300k. I'd recommend getting one with the 350 V8, the 305 is a total slug, the 350 feels pretty damn quick until you get past 60mph (this is coming from somebody who owned a 350hp V8 Camaro).
The real beauty of these cars is their simplicity. They use Chevy V8's, are based on the same chassis as a Chevy Caprice, and you can buy just about any part at your local Autozone. Maintenance/parts costs are probably about 1/4 of the price of a similar year Mercedes, BMW, Lexus, Acura, Infiniti, etc.