I have just upgraded from a fully manual Rok Presso and grinder to a Bambino Plus and the Fellow Opus, and I am extremely happy with how the grinder performs. I was worried that the electric grinder would be very noisy but it is perfectly manageable, and it doesn't take anywhere near as long as hand grinding so I'd say the noise is less overall.
Visually, it fits perfectly alongside the Bambino, and they look great together. The grinder is nice and sleek, and the flat top is perfect for keeping dosing cups etc to reduce kitchen clutter.
The grinder performs really well, and is easy to adjust to dial in, with a really clear dial to show the current setting.
There can be a little mess from static coffee grinds flying around, but a water spritzer keeps that right down. There is also a fair bit of retention, sometimes 1-2 grams can be left behind, but a gentle tap is enough to get this out, so that the coffee out is 100% of the weight of the beans that went in, and this just becomes part of the routine.
I am extremely happy with this grinder and would definitely recommend it.