Who should choose Grohe
Choose Grohe when: you're specifying Grohe faucets, thermostatic showers, or other Grohe bath products and want a coordinated single-brand bathroom; your design aesthetic is European contemporary rather than US traditional; you're working with a plumbing showroom that carries Grohe and offers installation design support.
Who should choose Kohler or American Standard instead
Choose Kohler or American Standard when: you need Home Depot availability; you want the deepest available alcove soaking depth at lowest cost (Kohler Underscore RL at 17.5" depth beats the Grohe Geneva at 15" at competitive pricing); or when cast iron freestanding is the target category (Grohe has limited cast iron options for the US market).