AROS and all distros are a constant work of progress. AROS is in Alpha stages, so unless your nostalgic friend is into beta testing, trouble shooting, and having his system negatively impacted by updates and what not, I would not advise it as a full time OS yet.
For those of you who would like to contribute, I'd say IcarOS is the most fully featured, but AspireOS is coming along well. I've not tried Broadway, nor the Classic Amiga stuff.
