My older Stealths have done a great job, one has a problem being off +/- 4'f from its dial calibration. I would not buy a new one, what with all the problems people are having. Bad ju ju, take a well regarded product and get cheap with it, and they wind up with serious problems.
I also have two 300W Won Bros Proheat IC, mine have run like clockworks for 8-9 years... I must've got lucky there, so many bad reviews on those.
I'm in the market for a new 300W for our turtle's tank, probably going to get a Hydor 300w ETH.
I am concerned for the security of our great Nation; not so much because of any threat from without, but because of the insidious forces working from within.