The ones on the GTP's are about as strong as you can make them. Really, the only issue is torn boots which slings all the grease out. IF you catch it when they first start doing it and there is no contamination in them, then putting a new boot on will be OK. The problem with the aftermarket reman ones, is when someone let's them get so bad that the bearings go out, they are rebuilt with substandard parts. The metal in them isn't as good or they might have missed something, since they only replace what needs to be replaced sometimes.

The bottom line is proper maintenance on a car is your best friend. It keeps you on top of things, and you can catch something quickly before it gets too bad.

Keep in mind though, that these joints are vented, and that some grease may normally come out every now and then. It's when you start seeing a substantial amount is when you start to dig deeper.

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GreenBastardPerformance2000 GTP Coupe (the green bastard)
XP, Pacesetters, LS1 TB & MAF,MSD System, P&P LIM, P&P GenV w/ 3.2, 3.0, 2.8, Devil'sOwn Injected 100% Methanol,PowerTuned, TripleEdge Trans w/3.29's
12.92 @ 105mph