Asking for advice and help with HYT books

[AmidaB]

Tashi Delek,

I'd like to ask for your opinion about these books from Geshe Acharya Thubten Loden:
- Ocean of Indivisible Method and Wisdom (Yamantaka)
- Great Treasury of Mahamudra
- Great Treasure of the Six Yogas of Naropa
- Path to the Union of Clear Light and Illusory Body (Vajrayogini)

I'd be grateful if you could share with me your thoughts on one or more of these texts. I'm considering buying one or two of them but these are rather expensive for my budget.

Thanks,
AB