I think I have tried it all.
After ds#2, I tried MS with IUI. Had more than one follicle, perfect cycle, perfect timing, BFN. I used injectibles and monitoring, so my cycle cost around 4-5K. I was about 27 at the time and always got pregnant first month trying.
Swayed my ass off for #3, got another boy (who has since stolen my heart!).
Tried MS/PGD/IVF at 31 years old. (cost around 17K) Didn't even make it to transfer. 19 eggs, 5 fertilized, only one normal femal out of the bunch but she did not make it to transfer.
My cycles were messed up after IVF, oops....here comes my daughter.
Just go into this knowing that there are NO guarentees!