Looking for some advice on a spindle sander,

1st off I use sanding drums on my drill press right now, not too impressed but it gets the job done.

So those of you who have a spindle sander do you find other uses besides sanding curves?

I'd like some recemmondations also, was looking at the grizzley 529 spindle and disc sander combo, just not sure if I could justify the machine unless there are alot more uses than I know of.