Summary: I would buy again unless I was looking for a very minimalist build.
Pros: Cheap. Does what it is supposed to do. My system doesn't run all that hot but the fans were running pretty good and making a heck of a racket. I switched to Noctura fans and this controller and now my wife's laptop is louder than my desktop even when I'm pushing it to max performance. No problems...
Cons: I would rather something LCD/touchscreen that was a little less flashy. Cables are an issue - but you should expect that, right? Instructions were limited (or none) but it's pretty obvious. I would like the LCD to go dim/blank when not in use.
Summary: No issues with installation. Cables were merged with each other, easy to separate to place sensors and fan connections just about anywhere in Full tower. Control panel fairly simple to use - without the instructions (recommend reading instructions).
Pros: Reliability, is why I purchased this unit a second time. Previous used in another build.
Pros: Recently upgrading my previous build from an i7 860 to i7 4790k and I am a huge airflow cooler type person. Nothing against liquid but I don't push the boundaries like other enthusiasts. The controller allows me to take my system to the next level for control and monitoring. Granted, it's not the...
Cons: The adhesive/tape that comes with the sensors is not all that great but the product works so well, so easy to configure, it's not worth taking an egg off.
Summary: The temperature reading will bounce all over if your power supply is not stable. They don't read out RPM.
Pros: I own five of these in five different machines. All of them for a little over a year now. I am very happy with them. They are simple controllers, but are great for what they are. Great way to control fans that are either 2-pin or 3-pin.
Cons: May not be the fault of the controller, but some fans won't start with these.