original nusd is not better, they are different
pro of the original nusd is that it can update its database in the click of a button
however, my program can batch download files (so u don't have to babysit it like the original nusd and wait until one download is finished to start another one), and has a lot of noob friendly tips and solutions... there are a lot of features of the nus auto downloader program, try it out, and if u still prefer the original nusd, then by all means use it
all i use the original nus for is looking at its database so I can add files to my nus auto downloader script
edit: fyi, my auto downloader program is based on the original nusd, so mad respect for its dev WB3000