For $100 cartridge on a Scout, I recommend a newer design such as the Ortofon 2M Red. If you're thinking Denon DL-160 (which is $180), then also consider the next step up in the Ortofon--the 2M Blue at $199.
The VPI JMW 9 tonearm has an effective mass of 7.7g, which is definitely low mass. The Ortofon 2M Red and Blue both have a dynamic compliance of 20 x 10-6cm/Dyne and a weight of 7.2g. This makes a near ideal match with a cartridge/arm resonant frequency of around 9 Hz.
The cartridge/arm database and calculator is available
here.