Ddays
Hooked
I guess I'm on the other side of the RCV debate lol. I've had two sets of RCVs in my WJ. One set in my D30 and another set in my HP44 that had to be custom. I haven't had any issues with either set, but as somebody mentioned before, my WJ has hubs up front. I've abused the shit out of that jeep (hence one reason it hasnt been working in forever), and they've held up.
Now obviously the opinions expressed in this thread are from first hand accounts, and while personally I think they are both good options, it all comes down to your persona preference.
When it comes to my JK, I will probably do Chromoly shafts.
I don't think there is anything inherently wrong with the RCV shafts, it's just that:
1) they are very expensive
2) they really aren't necessary in a low HP vehicle like a V6 JK
3) the damn things sound like shit as they wear
On a dedicated high HP/trailered rig RCV's would be a good choice I think. On a street driven Jeep I think the full circle clip Chromo shafts are fine.