I have a Benro KS-0 that's well built, reliable, holds my 300/4 and D80 with grip easily, and has never been any trouble. I'd have bought a Redsnapper, but they didn't exist when I bought the Benro.
Plus - and I may be wrong here, I'd appreciate clarification on this from Redsnapper - the two look incredibly similar, to the point where I wonder if they may be one and the same.. I know Redsnapper don't build, they import and rebrand - so it's possible they import from Benro? Don't believe all you read - my own Benro head is excellent, and I'd buy another. Maybe it's not an Arca or RRS, but then it didn't cost £350 either. I used it yesterday - and I'll be using it tomorrow.
If you're based near Cheshire, you're welcome to meet up and see the tripod head for yourself... but remember, a 50 mile round trip just cost you about 1/3rd the price of this head...