So I've been an EOS R5 user for a few years now and usually I just lug around the RF 24-70mm f/2.8 but I just did a weekend hike in the Smokies and my neck is still feeling it. I have a trip to Switzerland coming up in three weeks and I'm starting to realize my usual kit is just way too bulky for long days on the trail.

I'm torn between the 24-105 f/4 and maybe something more versatile but I don't want to waste that high res sensor on glass that isn't sharp. Budget is around 2k. Should I just stick with the f/4 or is there a better one lens solution for those mountain landscapes and street shots...