Putting QC concerns aside, because that's relative factor. 99 people will get 100% perfect product and 1 will get somewhat mixed item, its no reason to claim that product is crap. Rating 6/10 is a joke frankly, but that's the problem with reviewers who get only short-time/one-time experience with product on hand.
In defense of BP. I'm using 3 of these (acrylic top) Summit blocks and couldn't be happier. Yeah EK mounting mechanism is better for example, but I get 2C less on Summit than on Supremacy. Block is also foolproof. You can't put it wrong after maintenance - with EK you can.
BP prides itself on superior customer care which is active like 20h every day. I had once issue when they've supplied wrong bracket in motherboard kit. Same day they shipped (after providing proof of purchase) the proper one directly from Taiwan to me (in EU) with expedited courier shipping. By end of the week I had it on hand and problem was solved. Screaming about how [...let's say very bad...] company is because there is a mix-up in delivery never solves anything. Sure there is a bit of frustration, but fix is very simple.
And theirs fittings are in league of there own. There is very good reason why this stuff cost 2 or 3 times more than competition. Of course hole in the wallet is side effect ot this.
![Stick Out Tongue :p :p](https://tpucdn.com/forums/data/assets/smilies/tongue-v1.gif)
EK vs BP fittings are like primary school education vs MIT. Can't compare.