Used one previously on custom water loop and was impressed how quiet this was at the time. Ordered this particular one to replace my existing pump / res combo that started to make noise and was annoying me as rest of PC is almost silent. After installing this the PC is quiet again.
Would order again if new custom build is needed.
Definitely recommended - the small size helps the pump to be fitted in an "overcrowded" PC case. Quiet and compact the pump does the job.
The only disadvantage I experienced was electrical noise on the power supply rail - this was sorted by using a LC filter.