I currently have a Yamaha CG151C and I want to upgrade.
I would like some recommendations. Big name brands are fine and so are small scale guitar makers. I just want a quality nylon guitar. 1000 dollar spending limit.
Oh! 1000$ nice.

Thats around 800 or so euro. You can get some very nice Alhambras on that budget. Look up Alhambra 8P and Alhambra 9P. Very good guitars. I've played lots of different guitars(same model) and they're very consistent. Good tone, good playability, good construction.

You can also look at other Spanish brands like Jose Ramirez, Conde Hermanos, Raimundo though they get more expensive. If you try and find one that you really like it's worth a try.