I have not used those but I firmly believe you get what you pay for. I own some Blichmann products (Beergun, Hoprocket) and just ordered and waiting for it to arrive the top tier system with two kettles, the hopblocker, sparge arm, false bottom, plate chiller, thrumoter
I did a tone of research and found very little negative about it. Mostly people complain about price. Everyone to a tee says they are built great, work great and will last a lifetime. Spend a little more and buy it once.