I like my SPARC. Unlike many the dot can be adjusted down to 2 MOA. Many are only 5 MOA or more. It makes it possible to actually shoot with some accuracy at longer ranges.
Compared to many others I've tried the adjustments work properly. Some I've tried were challenging to zero. Move their adjustment knob 3 clicks right and it moves your POI 6" right. Move it 3 clicks left and this time it only changes POI by 1". The SPARC was consisent and easy to zero.