I'm not a fan of Harbor Freight at all (all Chinese crap) but one day I was in a real bind and HAD to stop at HF to see if they had an 8" dado set for my TS. Sure enough they had a Lifetime 8" carbide dado set for $49. I grabbed it and quickly drove the 40 mi. back to my shop in an effort to get back on schedule. I have used it for almost 2 years now and it's one of the best I have. It stays sharp and the bottoms are perfect (as near as any I have ever had).
I make bee hives each year in late winter and in 2011 I made 200 "supers" (another name for bee hive boxes) which relates to approx. 8,000 fingers. These past two months I have made 150 supers or 6,000 fingers. I just sent the HF dado set off to be sharpened after approx. 14,000 threequarter inch fingers in pine.
I still stay away from HF. I think it's the American thing to do. How can we expect to make America strong again if we buy Chinese garbage?