I received my Bosch 39-15 yesterday and putit immediately to work.  I am re-doing a basement room and had to cut many boards for trim.  Out of the box it was in perfect alignment.  Quickly read the instructions and off I was.  I didn't experience a problem with dust any more than my chop saw by Dewalt.  It is very smooth.  The unit has a very smooth glide and moving the saw head to make the cut is effortless.  It took me months to decide which unit to buy.  This was the must sturdy unit I evaluated and it's ease of use helped me make my decision.  Amazon had the lowest price.  Ordering on line was great.  So simple and fast.  It was delivered in five days.  If you want to save a lot of money, buy this unit.  There isn't a saw that can compare to the quality of build on this saw.