Now I've simply got to try that Saffron James Le'a! I've been reading about it for years but have somehow never gotten around to sniffing it. Having said that, I'd trust this rec from Kiliwia, too.
My favorites are Chantecaille Frangipane as Kiliwia also suggests, and I'll also second kalli's recommendation of Chanel Beige, which is an absolute favorite of mine. And I'll add Annick Goutal Songes, which isn't a soliflore but the divine frangipani note is absolutely the star of the show! Also, I've recently fallen in love with Chanel Coco - the edt - almost entirely for the wonderful frangipani note. It's got some spice as you'd expect from a Coco, but they're much softer than in the edp or parfum, and the florals really stand out, particularly that luscious frangipani. I've been swooning over it all summer.
Another I've tried and like is Lucy B Pink Frangipani, but it's a bit sweet and linear for it to be a favorite, although the frangipani seems quite nice and authentic, if she's interested in a simple soliflore. I really like the Ormonde Jayne Frangipani too, but it's more bright and sparkly than lush and tropical to my nose, and it has a tart lime note that seems to overpower the floral a bit. It's a beautiful floral perfume, just not very frangipani-like to me. I've also found it to be very fleeting.