Isn't the most expensive always best?
A wise man once told me, "Don't believe the hype!"
i think my innovativeaquatics medical pump cost me $90 and has been running for about 11 months on the same tube set.
So far i am happy and it won't hurt too bad if it craps the bed....
I wouldn't recommend a medical pump for Top Off, but 2 part dosing is so low volume i don't suspect i am putting much of a strain on it. Tony is right it is pretty darn precise.