Aly, the harness I use on Bob isn`t the same brand name but other than that is exactly the same!!

TM, Bob is a very strong dog (it is little know fact that Springers have been used to pull sledges!), anyway, I have found that particular harness very good to use on walks where I don`t want to keep him very close but still retain control.
As for a head-halter, I find it to be invaluable in taking Bob out when I want to keep full control, amongst people/traffic etc. I don`t use the Halti, though I have done, the one I use is called a Komfi Dogalter and has a padded nose band. The one I want to get is this one...

http://www.dogmatic.org.uk/

....but it is a bit too pricey for me right now!