At my previous clinic they would only do gonal f (400 then) so I changed clinic and tried menopur only and had my worst cycle ever (2 eggs, 1 fertilised and frozen at day 3). My next cycle was back on gonal F but at 600 and we added the luveris.
this cycle I will finally be doing a protocol called aacp (agonist/antagonist conversion protocol). It was created by a Dr Sher in the US. http://haveababy.com/fertility-infor...ach-to-ovarian
If you look at the link above he talks about the different protocols he uses and the conversion protocol is there. It is the only one he recommends for low responders. Maybe worth looking at this and other blog posts (if you search on The agonist/antagonist conversion protocol (A/ACP) on his page you will see a lot of blog posts that refer to it.
Oh and I forgot to mention that Saizen will only help with quality, not numbers.