To be honest, both of these British sets look exactly the same. Are they? They are in fact so 'similar' that the Dragoons set seem to have given up on their 'guidon' standard and gone for a regular cavalry square model instead.
Whatever the case, from what I can see in the figures photo they look very good as mid C18th British cavalrymen, and in my book that is all that matters.
Any news on the Prince's Bodyguard/FitzJames Horse set?