your jet application is indeed a winner, having the water forced in from the top, and then escaping the hole via the side slots, that forms the channels between the holes, "molecules in, molecules out, as fast as possible" SPOT-ON!
however ... I found that it is a wee bit limited by it's Wattage capability. When dealing with 250W+ of heat, spread over the entire block, things start to look a little bit different.....