Quote Originally Posted by Fable
What are these clear spheres you're talking abput?
It's spheres used to remove old nods. You make useless nods like mp+10 or def+1 to empty nods. Then you use a HP sphere or whatever to get a super usefull str+4, def+4, HP+300 sphere on the empty nods. Got it?

And to answere your not-yet-answered questions... Nemesis stats are not as low as 85-90 on the Pal version.
If there's any difference at all I don't know... but I don't think the difference could be that big...

And it's only worth it if you enjoy the battle or just want to know that you've beaten a tough foe.