well lets put it this way; would you use a cheap set of entry level tyres on your ferrari?? sure they stay inflated, they allow you to drive your car in reasonable comfort; but they dont fit the rest of the cars looks or performance. again this is just my opinion; you of course are welcome to do whatever you wish with your senns, but I just dont think a $5 connector on a pair of cans that cost as much as my first car did, is appropriate thats all.
It's a fallacy to assume something is of low quality because something else is dramatically overpriced. You can buy $10 of food at the market, prepare it well, and have a wonderful dinner. Because some restaurant in town wants $200 for dinner does not make your $10 meal garbage. What really happened is that you didn't waste $190.
If you want to buy a really expensive connector, go ahead. But that doesn't mean less expensive ones are junk.
And if we're showing amp pictures:
I'd use 'em all with the HD-800.