Dog Training Advices & Tips

i have a rescued dog and he pulls when walking. i looked up many things to stop this but they all sound the same.
1) Follow me head collar–ive never seen this in stores,it looks just like a halti..is there any difference??
2) Halti–many people say dogs hate this–how do u get them to accept it..is it worth the $$??..does it work?
3)Cesar Milan ILLUSION collar? ive heard that hes a great dog trainer but does this collar work? if so..HOW?? and how well??