I have the Bubble Magnus T-101 and a couple of BRS 1.1 ones.  The nice thing about the BM is that it doesn't tie up 2 ports on your Apex or whatever.  You can set it to dose multiple times per day and also stagger the 3 pumps so they are running at different times.  The BRS ones just plain work, plug em in and they run.  The BM dispenses much faster than the BRS fyi.