Teco chillers have issues I repair more of them than any other chiller and their repair service is the worse their service techs are high school drop outs! Arctic chillers are the best around I work on and service all brands of chillers all day and engineer chillers to by far they are the best!
I have a tradewinds chiller, I have not had any issues with it. I bought it several years ago, and when I looked on RC I could only find good things about them.
I've got a Arctica on my tank that was bought new in 2009 and is running well on my tank. AFAIK, it has not needed servicing before I got my hands on it. It also hasn't had to kick-in yet this year after the conversion to LED's.
I had LEDs in a canopy on my Nano Cube and needed a chiller, got a 1/10th Hp at DNA. It was a pacific coast imports. Worked great!! Kept my tank right around 77. Now I have a MH and run it open top and dont need a chiller with the fan I got on the light.
Great choice led lighting is the best lighting out there great color you can't get with other type of lighting and faster coral growth u can't get with other type of lighting and LEDs have been around 5 years now so most of the issue and spectrums are worked out