Preseed?

My fiance and I have been trying for almost two years and decided to go ahead and try preseed. In case you don't know what it is, it's a sperm friendly lubricant that you use if you're trying to get pregnant, and it is supposed to help the sperm get to the egg. I've read reviews online of people saying they LOVED it and there was even a woman who said they'd been trying for 4 years and they finally tried it(figuring they had nothing to lose), and were pregnant after a month! I just wanted to ask other women on here and see if they've tried it and whether or not you guys would recommend it