kalk reactor: which one?

[pomme]

kalk reactor: which one?

okay i have decided to get a kalk reactor but i am not sure which one to get between the deltec km 500 and the ratz Calcium-hydroxyd reactor type 110

the deltec one

http://www.deltecaquariumsolutions.com/kalkstir.php

and the ratz one:

http://www.ratz-aquarientechnik.de/katalog/KatalogMainE.htm


and then for the feed pump:
a aqua medic sp 3000:

http://www.aqua-medic.de/index0.html


or a stm midi doser:

http://www.stm-shop.co.uk/category16_1.htm


and then for a float swithch:

the deltec top up system:

http://www.deltecaquariumsolutions.com/kalkstir_4.php


or the aquamaster top up unit:

http://www.stm-shop.co.uk/category18_1.htm

so what do you guys think of these?

thanx andrew