jlanoue, I have not had any experence on the NRD, hear its a good radio, but between the R75 and NRd all that really matters is how much you want to spend, the R75 will do anything anyone would ever need for HF, besides transmit.
Although the NRD545 is alot more "eye catching" as far as looks go, sometime I get tired of looking at an Amber Screen for 4hrs stright...lol