Take-home test is my preferred method, but - only after I had a face to face (can be on skype, but not on phone) interview with a hiring manager/engineer, so I

Take-home test is my preferred method, but - only after I had a face to face (can be on skype, but not on phone) interview with a hiring manager/engineer, so I know I really want to work for that company. Job ads usually not very useful determinating that (Interview should work both ways.) - Not used as a prescreening. It should prove that I really know what I'm talking about. Otherwise, maybe I'm just wasting my time (See above) - No more than 2-4 hour (we agree on that) - We review my code. It's good for both of us. I get feedback, the Interview gets more inside why I did what and if I really write the code. (Optional, but prefered)