Have to say I'm unimpressed, but maybe your experience has been different. I'll be sticking with Novapick diamond tips because these foreign jobs made out of carbide need constant replacing. Nova includes replacements on the rental teeth too, but you'll probably only change 2-5 teeth. The only times I'd use carbide would be if I expect some dumbass to break them on a manhole :tong
Pick your poison - a small fish pushing the cheapest import or a big one pushing a premium on their product. At least with Sandvik, Kennametal, or Wirtgen you know what you're getting and their supply is proven. Also, Kennametal is based in PA and should give you more bang for your buck!