How does the Robin HR compare to the DR? Being all metal I would suspect similar performances to other all metal planes, but with a better view.
Robin HR100's are good long range aircraft they have 4 X 25gal tanks and cruise at 120knts. The downside is that they can suffer from main spar corrosion, the 4 bladder tanks can develope leaks if they're left empty for long periods, the windscreens can develope cracks and parts can be a problem. On the plus side they are stable, easy to maintain and have nice clear outside view.
The Robin factory isn't (wasn't) like a Boeing, Airbus factory but more akin to a large homebuilt workshop.
No SIDs!