Hydor koralia

I had a koralia 4 pump die on me today, so I am questioning what I am going to do for flow. The pump was about a year old, not too long of a lifetime if you ask me. Anyway, I was thinking of getting 2 k2's to disperse the flow a little more, or getting some other type of pumps. What does everyone here like? I don't have a controller either.
 
I originally started with 2 K-3's in my 75. When the 1st 1 crapped out after ~6 mo. I replaced it with 1 of my year & 1/2 old Seio 620's. When the other crapped out a couple months ago I added my other "old" Seio 620 in it's place. Until I can afford some Tunze or even better Vortech, the "old reliable" Seios will stay.
 
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