Morenika/Sheharhoret w/Kedusha - Raml Maya - מורניקה\שחרחורת עם קדושה רמל מאיא
This Kedusha will give you goosebumps. I usually save it for special occasions since it's a favorite among the Kahal. Can be used whenever or wherever, but like I said, it's so beautiful, you're going to want to save it for unique moments, especially a Shabbat Hatan or wedding.
The tune is in Raml Maya - the main maqam for Parashat Lech Lecha.