I agree on SLA for visual models however outsourcing brings us far enough as we only need a handful of purely visual prototypes a year.
For rapid prototyping FDM machines are great and some are almost without issues - we have now a Wanhao Dup. 5s Mini and it’s just awesome. Plus you are closer to the actual product in terms of mechanical qualities, being able to print with PLA, ABS, PET, PETG, PP, flexible TPU and several other materials.