help me choose a pump and waterblock
 

Price is my main concern. I'm looking at below $50, so DC pumps are out (I'm not sure if my Antec SL350 could handle one anyway). Reliability is also pretty big for me, as well as silence. I dont have a waterblock yet either so please suggest one as well. What i do have, if it makes any difference, is a bonneville heatercore (dual 120mm) that i was lucky enough to find in an abandoned car. I am also going through the process of buying a used maze 4.

Reliability, silence + cheap dont often go together. 50$ for both, each...? DC pumps arent hard on psu's, the most they generally draw is about 2A @ 12v (starting) and less than that continuously.

If you want reliability and silence, you have to bite the bullet and spend money. Thats all there is to it, really - if you're going to drop money on a component, the best thing to spend more money on imo is a pump anyway. How much is your hardware worth? If you're willing to watercool hardware probably worth hundreds of dollars, you wont regret spending money on a pump.

For silence + reliability, the eheim 1048 or the mcp350 are the only pumps that id go near, personally. I'm not sure how cheaply you can get the 1048 for in your neck of the woods, but here its a similar price to the mcp350.