VAMPYROS LESBOS and SHE KILLED IN ECTASY are both some of my all-time favorite Jess Franco films along with EUGENIE DE SADE and DORIANA GREY, I have seen several of his films (some good, some bad). I've even seen EUGENIE, with Marie Liljedahl. I still need to watch: EXORCISM, FEMALE VAMPIRE, A VIRGIN AMONG THE LIVING DEAD, and SINNER: DIARY OF A NYMPHOMANIAC.
That's a pretty good top 10 best films by Jess Franco you've posted (even though I've watched 3 of out your 10 on the list). :) Soledad Miranda, Lina Romay, and Marie Liljedahl all made true beautiful knockout performances in his films (a show-stealer).