Raisin Massai - you already have a formal, TDF Box Birkin. You seem to be quite tall and would look good with a casual and practical Massai. The Raisin is a great color.
A massai in clemence also gets my vote. There are so many colors though, grey, graphite, raisin, etc. Since you are so close to FSH I would go and look at the different choices.
I've tried the Massaï (and so the Vespa) at FSH, and I loved both size.
I looked the H leather book, and the Raisin (Clemence for Massaï / Goat for Vespa) really caught my eyes... But you are right I need to look again the H Greys, before making my final choice.