Vasectomy Reversal vs ICSI

Hi, I am seeking some advice/opinion on my situation... I am 37 years of age and have been diagnosed with Endometriosis, PCOS and Adenomyosis. In my previous relationship, we tried IVF for 5 years with no conception at all. Unfortunately we separated - largely due to the emotional issues surrounding our inability to conceive. However...hold your horses! I have an AMAZING new(ish) partner who wants to make babies with me. The issue we face is the choice to have his vasectomy reversed or whether we go for ICSI.

My sticking point at this stage is that ICSI will be less expensive than the vasectomy reversal. But I'm wanting some more views on your past experiences/ what have you read or heard? There are a million mitigating factors here I know - but someone on the same wave length as me would be, in the very least, a comfort.

Thanks :ttc: