Ok, so before I purchased this I never did any miter cuts of quality, but this unit makes this weekend warrior look like a professional. Wainscoated a bathroom with 30 feet of wall run, with 6 inch v grooved board (4 ft tall, one board at a time. Mitered all coners....everyone came by and said it looked professional...AND IT DOES.  Unit is worth every penny.  I researched which unit to get and for my money, you need not spend anymore than what this one costs.  I would give it 5 stars if it had a laser...but I would not spend another hundred dollars for a laser.  Unit came out of the box right to spec.  Although I checked for adjustments, none were needed.  If you can find a better one for this price ... Buy it!