Dosing pump question

[Rickyrooz1]

Has anyone purchased this dosing pump system (http://cgi.ebay.com/Aquarium-dosing-pump-Triple-Grade-performance-/200516966542?pt=LH_DefaultDomain_0&hash=item2eafbe188e)? I was wondering what the reviews on it were like. Should I get one of these or can I use an Aqua Lifter (http://cgi.ebay.com/Tom-Aquatics-Aqua-Lifter-Dosing-Pump-/200489124052?pt=LH_DefaultDomain_0&hash=item2eae1540d4) on a timer? The only thing that worries me about the Aqua Lifter is that it pumps the liquid through the tube pretty fast and if I'm going to use it for a two-part system it'll need to be much slower. The Aqua Lifter pumps 3.5 gallons per hour (220 mL per 1 min.). Any suggestions?

[shifty51008]

i was looking at those also and the main problems I see is that they don't say anything about a warrenty. how constant do the pumps stay, and also if one pump fails can you just replace the pump or id the whole thing junk. those are the reasons I am going with either the BRS pumps or the drews dosers.