I've got a Kings 120W solar blanket. Bought it last year, used it a few times (including a trip up the western cape). Earlier this year it started to muck up a couple of times. Dropped them a warranty query, and it was replaced fuss-free with their brand new V2 design. Have only tested it in the driveway, but so far the new one has been fine. I know people do have horrible warranty stories about them, but my experience and those I've personally spoken to has always been really good.
Father-in-law bought a VMS off them probably 5 years ago now. It's been faultless ever since. We hooked an eBay reverse cam up to it, and it worked well. He's got an air compressor from them as well, plus a toolkit and a few other things. They've all been good. He watches the daily emails like a hawk and can predict the right time in their cycle to buy whatever he wants (not that the overall price ever fluctuates much). He's keen to get the 12V control panel for his new ute when it arrives, along with the DC-DC charger. Let's face it - those sorts of things are pretty much a commodity these days.
I've got the Big Daddy Delux swag. Love it - for the price, you can't go past it. Would I buy it if I was a full time stationhand and would be living out of it for 9 months of the year? No. But for what I use it for, it's perfect.
My brother bought the action cam years ago, and it was a fun toy for a while. At that price you don't mind tossing it in the pool or giving it to the kids to run around with. He eventually upgraded to a proper GoPro, and the video quality from it is, as expected, light and day better.
A mate has just picked up one of the 270-degree awnings cheap second hand (new in box). It's a fantastic piece of equipment, and seems sturdy enough. Sure, the hinges aren't up to the same standard as a Darche Eclipse, say, but for the price it's really good. We've had it in some bad weather up the dam with storms and such, and it's been fine.
Kings/Supacentre seem to be listening to feedback and developing their models to improve them all the time. They've just launched the version 2 of their hard-shell RTT with a bunch of improvements made directly from customer feedback (if you believe the videos). On the whole, I think they've done a lot to get people out and camping.
YMMV, but I've been decently happy with the gear I've got from them.
Cheers,
Matto