This link may help a little bit:
There have been quite a few write ups on both and comparisons. You may find it very beneficial to use the search function at the top of the page and search the comparison of the two or go through the pages of the threads in the mens section.
Both are good in their own right, and both can have people respect you. A314 is just more intense in that if you OD on it you may have people challenging your status signal or they will distance themselves completely from you for intimidation reasons. But buffered or at low doses it can work wonders for respect, and attracting women. IG is more the younger brother where you still get respect but it is also buffered a bit for you to seem dependable and have a cool guy i want to get to know him vibe as well.
Best thing for you to do is to read a lot on both products from other peoples experiences with both products.
GOod luck.