These silver iPhones look gorgeous. I got Rose gold. It's a strange color. It's beautiful but I can't tell what color it is. At least with silver you know it is silver!
I didn't notice the additional weight at all. But I do a lot of gardening and landscaping so I lift rocks and pavers a lot. I was not likely to notice an extra ounce on the iPhone.
I got the exact same phone. Silver 6s+. Couple hours in I'm loving it. Getting used to the size as I was coming from a 6, but so far so good. Have also always had black/space grey phones, so it's kind fun to have a new color.
As someone who has always had a black/space grey phone, I'm loving the look of the Silver 6S+. It feels like a different phone and a true upgrade. Glad I went this route.