The verdict: On longevity they're evenly matched (long (8-10h) vs long (8-10h)) — skin chemistry will decide. Character-wise, Parfums de Marly Layton wears fresher and brighter while Parfums de Marly Pegasus sits warmer and richer.
Parfums de Marly Layton (Eau de Parfum, 2016) against Parfums de Marly Pegasus (Eau de Parfum, 2011): Both come from Parfums de Marly, which makes this the classic same-house dilemma. Here's the honest, note-by-note breakdown — longevity, sillage, seasons, and who each one is actually for.
Parfums de Marly · Eau de Parfum · 2016 · Men's
Accords: sweet · vanilla · warm spicy · fresh spicy · woody · floral
Top: Apple, Lavender, Bergamot, Mandarin Orange · Heart: Geranium, Violet, Jasmine · Base: Vanilla, Cardamom, Sandalwood, Guaiac Wood, Pepper
Longevity: long (8-10h) · Sillage: strong
Seasons: fall, winter, spring · Best for: office, date night, night out, special occasion
Full Parfums de Marly Layton breakdown · Check price on Amazon
Parfums de Marly · Eau de Parfum · 2011 · Men's
Accords: almond · vanilla · creamy · sweet · powdery · warm spicy
Top: Bitter Almond, Bergamot, Heliotrope · Heart: Jasmine, Cumin, Lavender · Base: Vanilla, Sandalwood, Amber, Vetiver
Longevity: long (8-10h) · Sillage: strong
Seasons: fall, winter, spring · Best for: date night, night out, special occasion, everyday
Full Parfums de Marly Pegasus breakdown · Check price on Amazon