Carlos Co , Jul 19, 1998; 05:57 p.m.
Yes, I have the 3410 head with a 3221 tripod, Op-Tech strap, and TRI-PADS all from LL Rue. B&H will be cheaper though. I really like the setup although it is a bit too much for me to carry I've managed it over short 5 mile hikes (5'6", 140 lbs, out of shape). I use it in conjunction with an ElanII with BP50 and the 28-135IS.
I think that the 3047 is OVERKILL if you are using a 3221. The 3410 should be good enough for almost anything you would put on the 3221. Yes, you are correct, the QR plate on the 3410 slides in/out with a push-botton safety lock and a locking screw. No complaints with this QR setup.
I really like how I can adjust the knobs so that I can still adjust the camera while it stays fixed to where I set it without further knob tightening. Having had a lot of practice, I don't think I could setup my camera faster even with a ballhead.