Tweaktown calls the “Eisbaer” a MUST HAVE and has awarded it the Best Features Award. In particular, they praise the low volume yet high performance power of the pump. Naturally, the pure copper radiator gets its share of praise, along with the high level of expandability through the G ¼” threads and quick-lock closure. The quality of the “Eisbaer” and its overall workmanship also receive recognition and praise. All in all, a comprehensive test with much praise for the “Eisbaer” that’s worth a read.