PreSeed and egg whites are excellent lubes ....most stores don't carry preseed, so when I run out I use egg whites (don't need to use that much ..just be sure to whip it up so it's not stringy and the sperm can swim through it ..and bring it to room temp....WAY too cold to use directly!!).....(I usually whip it up then put it in one of those medicine tubes for the children and fill it up half way .... then put it in between my boobs and make coffee, etc. then come back up to bed and by that time it's a good temp..(TMI I know))...:-D
My Dh and I tried it 3 months in a row and had no success, but that may not be the fault of the lubricant.
The research is very impressive, and since I am starting back on the clomid, I may order some more of it.
pre-seed they say is great and does not kill the sperm like many other lubricant do. you can order it online
My cousin got pregnant with her first use of Pre-seed! I use the lubricant (not the preseed) because I have adequate CM, but their research is impressive! Also, I have read/heard/been advised by many sources that lubricants and saliva are damaging to sperm, so it's imperative (imho) to use the friendly stuff! :)
Good luck!