Has anyone received a positive response for replacement pump from SysCooling.

My pump gave up too so C1 is sitting powered off.
I am at the moment afraid to buy another C1 even if it comes with cooling kit.

Here is my take on C1 
1. More easily stackable  (+) (as seen in the pictures in this forum)
2. Energy Efficiency (+) but same as S3
3 Shipping cost (-) ( too high USD99)
4. Point of failures (-) ( pump, radiator clogging etc.) more than S3

I somehow still like it more than S3, don't know why.

How does everyone else feel about C1 (positive or negative).

I am going to wait for my first one to be operational again before I buy another one.
Or
I will go back and read Mr. Tupsu's comment and link for books for dummies and convince myself that C1 is not meant for novice like me.