I have the non solar and love the watch. The battery just isn’t an issue. I get about two weeks between charging with 15 or so hours GPS. (No HR or sleep tracking but notification on)
But must admit I like the look of the Titanium!
I find GPS battery usage at best quality is around 2% an hour. I guess living in the UK there wouldn’t be much solar charging going on anyway🤷🏻♂️
Pays your money and takes your choice, I think you’d be happy with what ever version you choose. Personally I couldn’t justify the price difference.