I interviewed little over a year ago and here is my advice. One search and search again for gouge but don't get cheap:

I used Emerald coast ($395) for interview prep. They will pick the five words from your perfect story and tell you why the message you are trying convey is not coming across that way and polish it up.

I personally didn't use sim prep (didn't have enough time), but when I was chasing the loc and forgot to trim on the go around I SURE WISH I HAD. Now I still got hired but what felt like a perfect interview suddenly went south and quick for about 10seconds. Then I had to regroup and run the sbi.

Good luck