+1 on the JBJ Arctica and TECO. I personally use a Tradewinds and very satisfied with it's performance so far. But, regardless of which direction you go with your selection, if your tank's cooling requirements are nearing the upper limit of what is recommended for the particular chiller model, always choose the next largest chiller to ensure an adequately cooled aquarium.
Other things you may consider is noise and heat. The smaller model JBJ Arcticas and TECOs get an A+++ in this category.
HTH and Happy hunting