Sigma 17-70 c

Hi guys , have any of you got opinions on this lens for 7100
i have a 50 1.8 35 1.8 18-105 and Tokina 11-16
im off to LA for a week , daughters wedding , then Vagas
love getting shots of grandaughter around the house and playing, thought this would be ideal as walkabout
think I'm trying to cover all bases as this will be one trip we won't be doing again
thanks for any opinions

Not a bad choice, but you already have an 18-105mm lens (Nikon I assume). What don't you like about your 18-105 lens? You might want to check out this link: https://forum.nikonrumors.com/discussion/864/new-sigma-17-70mm-f-2-8-4-vs-nikon-18-105mm-f-3-5-5-6

Thanks Brent. , aaah I'm not sure what I'm hoping for , think it's last minute panic , wanting to get the best shots I can
given this us a one off trip , wedding and vagas ???? Think your right what's wrong with my Nikon 18-105 , nothing it's a good lens , ok I stick with it and put the £350 on red ?