Hi Mel, it all depends on what your issue is. If it is an implantation issue, than neither would be successful. Have you had a hysterscopy yet? I would do that first.
Once that is out of the way, the rest is a personal choice. I was told 70% of our eggs are abnormal, so it takes lots of tries for us to get it right. I made 23 mature eggs, and for all I know, only a few could be good. If you have the $$ for mini IVF, I do beleive your chances are good based on your egg production.
How does hubby feel about DE? It's a diffucult choice only the 2 of you can make. What I do know is that if you want to try IVF one last time, you should do it now. You wouldn't want to put that off any longer. As far as DE - that can be put off. The mothers age is much less important with DE.
Good luck!
I wish I could help out with this one but IVF and DE is just not something I know anything about. I'm sorry. I do wish you luck though whatever you decide. I know this has been a long road for you and I would so love to read about your BFP. SSBD to you!!!!