as an advanced player, i would settle for nothing less than a metal pad. starting out i bought a bundle which had 2 konami official soft pads, and they were decent. one of them started giving ghost bads, and basicly was trash. the other one was decent, after i taped it to a piece of plywood id say its accuracy increased 10 fold.
also there is a mod you can do , cut open the plastic pad and put hard anything, preferably plexiglass squares over the button contacts and it makes the pad a lot better.
i bought a "MyMyBox" brand pad off ebay years ago, before DDR was super popular and there were people making commercial metal pads, and the thing is still solid and works great and was only like 150$ shipped.