The RO sander I have now is a Black & Decker BDERO100 cheapy that I think I paid $25 for. It vibrates like crazy and my hands go numb in like 15 minutes. For dust collection, I had to hack up the bag to make an adapter for my shop-vac.

So, how much "better" is a higher dollar sander from like DeWalt, Bosch, or Makita?

Will it transfer less vibrations back into my hands?
Better dust collection?
Faster material removal?
Include a vacuum adapter?

I guess what I'm asking is what am I gaining by buying a more expensive RO sander?