I've enjoyed most JHAG fragrances. I think my favorite, if I have to choose, is Juliette Has A Gun Miss Charming which is a very sweet and juicy fruity rose. It's a little syrupy but also tart and tangy. Well balanced and with fantastic sillage and longevity. I find the lasting power goes for at least 8 hours, and usually even more.
I also really love Juliette Has A Gun Lady Vengeance which is a classic rose/patchouli combination with a hint of vanilla. It's one of my favorite rose/patchouli scents. Rounded and creamy, with no harsh edges. Like all the JHAGs this one has great longevity and sillage too.
If you love patchouli then Juliette Has A Gun Vengeance Extreme is a more patchouli-rich and stronger in general version of LV. I prefer LV to VE personally, but they are both great quality.
Juliette Has A Gun Midnight Oud is one of my favorite oud scents. The oud is smooth in here and blends well with the spice and roses. It's dark, intense and luscious. This one I can even smell on my skin after I take a shower, so really awesome lasting power.
Juliette Has A Gun Calamity J. is another that I really like. Fruity patchouli and amber in this scent give the impression to my nose of a hot baked fruit cake on my skin. It projects well and also lasts.
"Love isn't brains, children. It's blood. It's blood screaming inside you to work its will." (Spike - BtVS)