Mat,
I have the Manfrotto 190XPROB,
http://www.warehouseexpress.com/prod...px?sku=1017664. It's a little lighter and cheaper than the Giottos you mentioned. I bought this one because the centre shaft can bit mounted horizontally (rather than vertically) which helps me get in closer to some of the macro shots I've taken outdoors. I also have the Manfrotto 322RC2 head,
http://www.warehouseexpress.com/prod...aspx?sku=10912. I can't recommend this head enough. Very easy to adjust where the camera is pointing, and I find making fine adjustments to macro shots simple and quick.
I can't comment on the Giottos, never owned one. Am sure at the end of the day it's personal preference.
HTH,
Graham