OneQuick -
You didn't say if you were using 3M, Meguiar's #9, or Meguiar's #9 2.0. The last one is easy to get good results with by hand. The 1st two are not. These products have diminishing abrasives that start out coarse enough to actually remove micro-amounts of clear coat, to round out the edges of scratches or polish them out completely - but at this coarseness it can leave super-fine scratches which will appear as haze - especially on darker cars - and the extent depends upon upon the particular kind of paint. Most of us like to use SMR with the orbital, because the secret to success is to work it, work it, work it some more, and keep working it. This breaks down the abrasives until they are super-fine polishing compounds, which polish out the super-fine scratches you put in with the same stuff earlier.
There is plenty of info about this on this board. feel free to search for more.