I have a mcp600 now, but the connector(where you put the tubing on) is broken. I can repair it by buying a used pump, which don't work. It's 25 dollar incl shipping. I can also buy a used laing D5(mcp655) for 50 euro incl shipping.

If i read the startpost, i can better buy the mcp600 right?
I will use it with:

Swiftech MCW6002
Swiftech MCW50(want to replace this with a mcw60/maze4)
BIXII
Danger den 5 1/4" bay reservoir.

Which pump of those 2 is the best for me?