Best replacement water pump?

[Phillytwotank]

i've heard some stories about new aftermarket water pumps being crappy.
i am in need of a new water pump...i think. Just wondering if anybody can weigh in on the best of the available aftermarket water pumps out there.

just in the past few days i've started hearing an intermittent "chattering" noise coming from right in the front of the engine. had me pretty worried thinking that it could be something bad... timing chain, vac pump. i didn't hear it all the time only at about 1200rpm revving up and down. today i was hearing the noise strong as i got to work. Pulled off the drive belt real quick to see if that changes anything. Did not hear the noise. sounded perfectly smooth running for a second without the belt.

Went feeling around on things and found that the fan/water pump has all kinds of slop. loose to wiggle about .25''

So i'm thinking that i found the problem there.