I have a 4 year old Custom Sea Life 1/4 HP. I think now they are called Current USA. It works fine on my 180g in S. Fl.
I also have one that I got used from a guy and I think its the same brand but was modified by puting on a larger cooling chamber. I use it as a back up and for cooling the new water befor a water change.
i have the via aqua 1/3hp chiller on my 100 gallon reef and it works very well i just purchased it about 3 weeks ago brand new for $419 from my LFS.... very good deal they gave me 30% off since it was there grand re-opening.... anyways it works well with a easy to read digital display ....
the only thing about chillers is they put out a lot of heat when they are runnning.... can warm up a room fast if you dont have addequate ventilation or ac on