The quick answer is the one that still has open sites.
But that said, if there is any availability is there a particular campground that is preferred over another? Only other time I have camped in RMNP was in Moraine Park back in 2003.
Will be tent camping with 2 adults & two kids.
Have seen the Glacier Basin pictures with the trees removed. The views look great, but in July some shade might be nice.
Unrelated, it's been forever since I've been back to these forums. Think I joined prior to that 2003 RMNP trip (or maybe before my ~2008) trip. Probbaly will be poking around again as we're headed back this July.