As a kid, I used to think Superscope/Marantz receivers with their horizontal tuning flywheels seemed cool, but that's as close to "warm and fuzzy" as I ever got with the brand. Didn't become aware of Marantz's previous incarnation as a USA brand until later in life.
Visually, the innards of the Denon and Marantz AVRs look pretty much the same to me. I think they periodically update the HDMI/digital boards, and freshen up the looks with new front panels from time to time, while keeping the rest pretty much the same year after year. Which isn't necessarily a bad thing.
Subjectively, my NR1608 sounds perfectly OK, and it feels like a "polished" product.
Front panel and knobs are all plastic, and you won't mistake the feel of rotary encoders and dome switches for the weighted, clicky controls of a 1970s receiver, but said controls are useful, and IMO, it's a good-looking thing.
AM/FM tuner is adequate, but lacks HDradio, and reception is no match for
state of the art designs. But then again, I'm not aware of any current receiver being a standout in that regard.