Get the 3232 head. It is the same as the 3229, but without the useless quick release. If you're looking into a QR system, check out Really Right Stuff. http://www.reallyrightstuff.com/
For vertical shots, all you have to do is unscrew it and turn it down like a ball head, as long as your camera is mounted that way. I've used the 3232 head for years now, and I have no need for anything else.
If you do get a booklet from RRS, they give a full explanation on the last few pages.
I use the 3229 head. Useless quick release? I would NOT buy anything without it. The 3229 works very well and I have no complaints. I love the quick release and plan to buy a tripod with the same QR mechanism so that I can always leave the plate on the bottom of the camera.
Nikonian in the High Desert of Southern California.
I use a 3009 Bogen Mini ball head. I will be upgrading to a Midi with a 3157 QR plate since I use that plate on my tripods with both Bodies. I find the Bogen plates are good enuff for my applications and the plates I have are equipted with the set screw that allows locking the plate preventing swiveling.
My good friend just picked up the 3018 monopod and the 3413QR head. Last night I was goofing around with it and it seemed pretty nice. Nice enough that my next B&H order will include that setup for myself. I like the QR system. Since my Pan/Tilt head on my tripod is also a QR Bogen, I can easily switch from one to the other with the same mounting plate. The same friend also has the 3265 on his tripod. It is pretty nifty but for a monopod, I'd rather have a more "normal" ballhead. Hope this helps.
A monopod is a good subtitution for hanholding, never for a tripod. Of course there are places and conditions when using a tripod is tough or impossible. But, ever since I have a tripod on the trunk of the car my monopod rests quietly in the closet. When I use it, it is with a Bogen 3265, Manfrotto 222 that suits my needs. Since I do use it for long lenses, I rotate the camera from the tripod collar without needing to change the position of the bottom plate on the lens.