I have everything covered with Powerflex, except for the dog bone and I can't fault them either. The car is very stiff with Bilstein dampers and H&R springs. I did scratch the belly of the car on a dirt road at low speeds like a week after it all got fitted, and a little flange on the biggest bushing got torn off, but it doesn't effect anything. I've heard that it's better not to mix bushings unless you know what you are doing, since each manufacturer sets up their own system with whatever balance in mind.
Need to have a look at my car to see if I actually need defcons as it's an older one. If it does I'm going to look into making my own as $125 for 2 bits of machined and anodized alloy is a bit steep when you can make them your self! Night make a few sets if I get chance, reckon there will be quite a bit of interest.