The upgraded clock would be really nice; I have a standard RTL-SDR without that, and the clock can drift a lot with temperature: it'll start up a few dozen PPM

The upgraded clock would be really nice; I have a standard RTL-SDR without that, and the clock can drift a lot with temperature: it'll start up a few dozen PPM off, and shift another few dozen when it warms up. Depending on frequency, that ends up being many kilohertz, which is really annoying if you're shifting/filtering/downsampling, as your target signal can drift outside of your filter window. A constant ppm error is easy to compensate for; less so when it changes.