I own a kitchen dealership in Texas, and have used at LEAST 100 GROHE faucets over the years, and I truly believe GROHE is still the best.  BUT I installed this faucet a few months ago in my personal home, and while I normally LOVE Grohe faucets, but there are a few issues with this (and similar) models (Grohe Essence Single Handle Faucet):
1. The faucet splatters water all over the countertop behind the sink due to the a) short reach, b) forceful laminar water flow and c) the water flow is straight down.  I'm looking at a GROHE replacement that has aerated flow and angled output.
2.  I REALLY dislike the "weighted" hose return.  The large weight "clunks" against plumbing below the sink and gets stuck occasionally.  I prefer the "spring" hose return you used to supply with your faucets.  I have purchased and installed an old-style spring and it works MUCH better now.