As far as i've heard the Hobbywing is the same Hardware as Speed Passion but the programming and profiles are different...
Have been told that Speed Passion software can be downloaded onto Hobbywing hardwire giving a budget competition option.
All of above has not been tried in experience so please correct if i'm wrong.
Buying abroard will always save money as long as you don't get hit with import duty and the item you are buying is going to be very reliable and not need any aftersales service... which is where buying in UK can win over as repairs replacements can be carried over using warrantys given.
Looks like a good budget option to me... although personally i'd buy good branded quality secondhand from reputable people to save the budget possibly more, worth keeping an eye out on oOple trade section as there are bargains to be had