I've used all of them except for the RJC metals and none of the ones I've used will hold up forever if the motor sees detonation. I recently put a set of the 9441's on my TTA, we'll see how well they hold up this spring. I've researched the sealant subject and most builders will tell you to put they on dry. Make 100% certain that both the heads and block are clean and free of any debris leftover from the other gaskets. As far as I know, the RJC's are th only ones that use any sealant. I was also going to try the RJC's this go around but was turned away from horror stories of them not sealing and coolant seeping into the jugs. The OE gaskets are good to a point but IMO are very fragile because of that graphite composite crap that's on them. If you should nick the gasket in any way it's about worthless...trust me here, I have a set of almost new ones hanging on the wall because they very slightly damaged during installation and blew almost immediately.