I have Impact in my car, really like them, USA made, excellent hardware and adjustments, I just get them re-webbed when needed. The cam lock are worth the price. I also like that the cam lock is on the right side, not the sub harness. Because then on the street for just cruising I use it like a 4 point. And at the track where I go fast I use the sub belt too to complete the 5th point. However, some brands the sub is the cam lock, and you can't do that.
I liked the RJS unit I installed in my Dad's 36 drag truck, very nice, especially for the price. Can't go wrong with RJS belts.
I can get it, but I don't like the Racequip stuff, it's all china made, and I don't think safety equipment is a place you want to skimp. However, its definitely better than not using safety equipment if it fits the budget.
Stroud is excellent too, I have a Stroud parachute and window net, great quality, USA made.