I'm a bit late on the topic. Here my take for the posterity.
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From front to back; (Original Parf Drill Bit)
1) Festool CXS with centrotech chuck, Ultra light. Strong enough to bore 20mm holes. I did 50 holes on small board (MDF 18mm) for my CNC with a single batteries and it still going. Drilling was easy and stable
2) (Your brand) Cordless drill with hex adapter, Works fine but a lot of wobbling. Wobbling is not a big thing since the bit is stuck in the parf unit.
3) (Your brand) impact driver is a no go. You better using a conventional power drill.