> Python offers more intuitive memory management than R (which is really more a statement on how bad R is at memory efficiency).

I haven't found that to be the case. Loading a 2gb CSV file when you have 8gb of ram is touch and go with pandas but with data.table it’s a breeze not to mention operations once loaded up are a fair-bit faster. The pythong version has recently been released and already provides a serious speed bump over pandas not to mention out the box memory-mapping for huge files. I recommend checking it out if you haven't heard of it https://h2oai.github.io/db-benchmark/