Mag pumps vs Quiet One

[tbone]

i'm looking for 2 pumps. i was woundering if there any difference with the 2 pumps?
seems to me there are alot of ppl who use mag pumps are happy with it.

what about Quiet One pumps? i actually have their older model pumps and don't like it. had to do 2 rma on it. one cracked and the other was grinding the shaft.
has anyone had any problem with their new pumps?

i'm thinking to go with mag drive pumps
any pros and cons with these two pumps?