Petit Thouars (http://www.chateaudptwines.com/) would get my vote, although I'm not generally a fan of Loire Valley reds. IMHO it's too cool for Cabernet Franc grapes to ripen properly, which is what Chinon reds are made from. 2017 and 2018 were pretty warm years. however, so there should be some decent stuff around
For my money the white wine of the Loire Valley is better, but Vouvray rather than Chinon Chenon Blanc - in Chinon they tend to do the white wines too sharp for my liking (and I am a 0% added sugar kind of guy). Vouvray is on the outskirts of Tours and also does Chenin Blanc wine, to my tastes a lot more sucessfully.