I am looking for a DVR with "alarm inputs" for under around $300.00 
  
I have tried Q-see, ZIOS, and HD-view,  They are all the same machine under different labels.  They all have alarm inputs but they all have unreasonably difficult to use software. 
  
"Amcrest" has good software,  but I cant figure out how to add external alarm triggers to it. 
  
Please recomend another brand to try.