dosing pumps

[twychopen]

I am wondering what everyone thinks about dosing pumps. I am thinking about getting dosing pumps but do not know which to get. So far I have been pleased with BRS equipment. I don't need huge ones as I have 50 gal. total volum so my doses won't ever need to be huge.
Any recommendations?

[Mr Cob]

what are you going to dose? If it's just kalk...I like the kent marine dosing setup. That's an inexpensive way to dose and of course other things could be dosed with that setup.